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公开(公告)号：US4800368A
公开(公告)日：1989-01-24
申请号：US91796
申请日：1987-09-01
申请人： George R. Wisner
发明人： George R. Wisner
IPC分类号： G08B13/191 , G08B13/18
CPC分类号： G08B13/191 , Y10S250/01
摘要： An arrangement for detecting the passage of living beings into and out of a surveillance region includes optics which concentrate thermal radiation energy from the surveillance region into a detection zone where an active area of a pyroelectric detector is situated and converts the thermal radiation energy received thereby into an electrical signal. An evaluating device evaluates the electrical signal of the detector to provide an indication of either the entry of a living being from the outside into, or the exit of a person from, the surveillance region from a change in the total thermal radiation energy received by the active area from the surveillance region. The optics may incorporate a mask which prevents thermal radiation from the outside of the surveillance region from reaching the active area of the detector. The mask includes a marginal portion which peripherally bounds an opening for the passage of the thermal radiation energy from the surveillance region to the detection zone and which may include at least one serration at the opening for controlling the timing of the electrical signal caused by entry of a living being into an area of the surveillance region corresponding to the serration relative to those caused by entry of a living being into the remainder of the surveillance region.
摘要翻译： 用于检测生物进出监视区域的装置包括将来自监视区域的热辐射能量集中到热电检测器的有源区域的检测区域中的光学器件，并将其中接收的热辐射能量转换成 电信号。 评估装置对检测器的电信号进行评估，以提供从外部进入或离开监视区域的人的入口与由所述监视区域接收的总热辐射能量的变化的指示 活动区域从监视区域。 光学元件可以包括防止来自监视区域的外部的热辐射到达检测器的有效区域的掩模。 掩模包括边缘部分，该边缘部分外围地限定用于将热辐射能量从监视区域通过到检测区域的开口，并且其可以包括在开口处的至少一个锯齿，用于控制由输入引起的电信号的定时 生活进入监视区域相对于与生活进入监视区域的其余部分造成的死亡相关的区域。
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公开(公告)号：US4800278A
公开(公告)日：1989-01-24
申请号：US928248
申请日：1986-10-17
IPC分类号： G01J5/34 , G08B13/191 , G01J5/04 , G01J5/08 , G01J5/10
CPC分类号： G01J5/34 , G08B13/191 , Y10S250/01
摘要： External noise in an infrared sensor for a ceiling type human detector is suppressed by increasing the conductivity between a conductive window and the can and improving the temperature compensation by offsetting any difference in the electromotive force per unit area of the inside and/or outside electrode of the sensitive element consisting of coaxial electrodes with different areas. In a pair of electrodes for ceiling mounting the electromotive force is larger than in a pair of lower electrodes for floor mounting. The sensor improves a total sensitivity for use in the infrared sensor for a wall installation type human detector, on account of improving performance and reliability of the pyroelectric infrared sensor for use as a human detector.
摘要翻译： PCT No.PCT / JP86 / 00275 Sec。 371日期1986年10月17日第 102（e）日期1986年10月17日PCT提交1986年5月30日PCT公布。 公开号WO86 / 07449 日期：1986年12月18日。通过增加导电窗和罐之间的导电性来抑制天花板型人体检测器的红外传感器中的外部噪声，并通过抵消每单位面积的电动势的任何差异来改善温度补偿 敏感元件的内部和/或外部电极由具有不同区域的同轴电极组成。 在用于天花板安装的一对电极中，电动势大于用于地板安装的一对下电极。 考虑到提高用作人体检测器的热释电红外传感器的性能和可靠性，传感器提高了用于墙壁安装型人体检测器的红外传感器的总灵敏度。
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公开(公告)号：US4746910A
公开(公告)日：1988-05-24
申请号：US915057
申请日：1986-10-03
申请人： Gustav Pfister , Peter Wagli
发明人： Gustav Pfister , Peter Wagli
CPC分类号： G08B29/188 , G08B13/19 , G08B29/046 , Y10S250/01
摘要： For reducing the susceptibility to false alarms and for increasing the detection probability of a passive infrared detector, the actual signals obtained from a first sensor element are continuously compared in a correlator with reference or set signals stored in a read-only memory and/or with the actual signals obtained from a second sensor element monitoring the near region. The correlator delivers an output signal which corresponds to the correlation of both signals which are compared with one another. An alarm signal is triggered when the correlation exceeds a predetermined value, for instance 0.7, and the amplitude has reached a predetermined threshold. The infrared detector affords high security against giving of false alarms and a high detection probability, even in the presence of signals possessing a great amount of noise, but also delivers an alarm signal in the event the detector is attempted to be sabotaged, for instance by covering the inlet optical system.
摘要翻译： 为了降低对误报的敏感性并增加无源红外探测器的检测概率，从第一传感器元件获得的实际信号在相关器中连续地与存储在只读存储器中的参考或设置信号和/或与 从监测近区域的第二传感器元件获得的实际信号。 相关器递送一个输出信号，该输出信号对应于彼此进行比较的两个信号的相关。 当相关超过预定值（例如0.7）并且幅度已经达到预定阈值时，触发报警信号。 即使存在具有大量噪声的信号，红外检测器也能够提供高的安全性，不会产生假报警和高检测概率，而且在检测器被试图破坏的情况下也提供报警信号，例如通过 覆盖入口光学系统。
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公开(公告)号：US4556796A
公开(公告)日：1985-12-03
申请号：US619429
申请日：1984-06-11
申请人： Martin Renals
发明人： Martin Renals
摘要： An infrared radiation detector comprises two differentially connected pyroelectric detector elements in parallel-opposition. The detector elements are formed in a single body of pyroelectric material having two adjacent pairs of overlapping electrodes on opposite major surfaces of the body. The two detector elements are poled in the same direction. To electrically connect the top electrodes of each pair to the bottom electrodes of the other pair, each electrode is provided with an L-shaped extension. Each extension is arranged such that at an edge of the body the extension of the top electrode of one pair overlaps the extension of the bottom electrode of the other pair. The overlapping extensions can be electrically connected together by conductive epoxy or by conductive clips on the edge of the body.
摘要翻译： 红外辐射检测器包括两个平行对置的差分连接的热电探测器元件。 检测器元件形成在具有在主体的相对主表面上的两个相邻重叠电极对的热电材料的单体中。 两个检测器元件以相同的方向极化。 为了将每对的顶部电极电连接到另一对的底部电极，每个电极设置有L形延伸部。 每个延伸部布置成使得在主体的边缘处，一对的顶部电极的延伸部分与另一对的底部电极的延伸部重叠。 重叠的延伸部分可以通过导电环氧树脂或者身体边缘上的导电夹子电连接在一起。
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公开(公告)号：US4441023A
公开(公告)日：1984-04-03
申请号：US288192
申请日：1981-07-29
IPC分类号： G01J5/34 , G08B13/191 , H01L37/02 , G01J5/10
CPC分类号： H01L37/02 , G01J5/34 , G08B13/191
摘要： A dual pyroelectric crystal sensor suitable for infrared intruder alarms and the like having two separate closely spaced identical pyroelectric crystal detectors connected in parallel opposition. The sensor includes a single ended field effect transistor amplifier with the entire sensor encapsulated in a TO-5 can. The two crystals each have one end cemented to a ceramic substrate in a cantilevered fashion, permitting shock or vibration to affect each crystal equally. Therefore, voltages due to the piezoelectric responses of the crystals are equal and cancel. If both crystals are irradiated by a common heat source, the pyroelectric generated voltages will cancel. If either crystal is irradiated separately, an output voltage will be produced.
摘要翻译： 适用于红外入侵者报警器的双重热电晶体传感器等具有两个分开的紧密间隔的相同的热电晶体检测器，它们并联在一起。 该传感器包括单端场效应晶体管放大器，整个传感器封装在TO-5罐中。 这两个晶体各有一端以悬臂方式与陶瓷基体胶合，允许冲击或振动均匀地影响每个晶体。 因此，由于晶体的压电响应引起的电压相等并被抵消。 如果两个晶体被共同的热源照射，则热释电产生的电压将被消除。 如果任一晶体被单独照射，将产生输出电压。
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公开(公告)号：US20230189418A1
公开(公告)日：2023-06-15
申请号：US18100219
申请日：2023-01-23
申请人： Google LLC
发明人： Clare Zhang , James Castro , Ken Jenks , Bryan Macomber
IPC分类号： H05B47/13 , G01J5/10 , G08B13/191 , H04N5/33 , G08B5/36 , G01J5/02 , G08B25/08 , G08B13/193 , G08B13/186
CPC分类号： H05B47/13 , G01J5/10 , G08B13/191 , H04N5/33 , G08B5/36 , G01J5/025 , G08B25/08 , G08B13/193 , G08B13/186 , H05B47/11
摘要： Systems and techniques are provided for sensor device. A sensor device may include a housing, a lens inserted into a first opening of the housing, a metal mask covering a portion of the interior of the lens, a passive infrared (PIR) sensor underneath the lens and the metal mask, and a light pipe around the PIR sensor, the lens, and the metal mask. Part of the light pipe may be positioned above an activation mechanism for a button. An airflow gasket may be around the PIR sensor. A filter circuit board may be under the PIR sensor and connected to leads of the PIR sensor. A control circuit board may include the activation mechanism for the button. A backplate may include a slot for attachment to a snap of a magazine in the housing of the sensor device.
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公开(公告)号：US11094420B1
公开(公告)日：2021-08-17
申请号：US17033507
申请日：2020-09-25
摘要： A system and method of maintaining social distancing guidelines with nearby persons allows a user to receive a notification when other people enter within a perimeter around them. A wearable device, especially a belt, equipped with infrared (IR) sensors detects heat signatures of nearby objects. The wearable device subsequently relays this information to the user's mobile electronic device, immediately notifying the user of persons within the predefined radius. The wearable device further differentiates between different distinctly human heat signatures, using artificial intelligence to determine whether a nearby person has the elevated internal temperature that could be attributed to COVID-19, or if the person within the preset radius is asymptomatic. In this way, users may be alerted to dangers approaching from all sides. Users are participants in the global effort to reduce human exposure and help in reducing the distribution of cases to manageable levels.
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公开(公告)号：US10605666B2
公开(公告)日：2020-03-31
申请号：US15856436
申请日：2017-12-28
发明人： Haidong Xu , Dongliang Zhu
IPC分类号： G01J5/02 , G08B13/193 , G08B13/19 , G08B13/191 , G08B13/189 , G01J5/04 , G01J5/08 , G01J5/34 , G01V8/10
摘要： A ceiling mount intrusion detector is provided that includes a sensor, a mirror for directing collected energy towards the sensor, and a mechanism for adjusting the mirror to account for a plurality of different mount heights. In some embodiments, the mechanism can adjust the mirror by moving the mirror up or down without rotating the mirror.
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29.发明申请公开(公告)号：US20200090477A1
公开(公告)日：2020-03-19
申请号：US16131108
申请日：2018-09-14
发明人： Roxana Monge Nunez , Shikhar Kwatra , Franz F. Liebinger Portela , Edgar A. Zamora Duran , Sarbajit K. Rakshit
IPC分类号： G08B13/191 , H04N7/18 , G06K9/00 , G08B13/196 , G08B21/18 , H04N5/33
摘要： A method for heat-based control of a surveillance system is provided. The method may include detecting a first pattern of heat transferred from a heat source based on a first sensor dataset corresponding to a first event, determining an expected pattern of heat to be transferred from the heat source during a second event based on the first pattern of heat transfer, and generating a surveillance model based on the expected pattern of heat transfer. The method may further include detecting a second pattern of heat transferred from the heat source based on a second sensor dataset corresponding to the second event, detecting the heat source during the second event with respect to the second pattern of heat transfer, and determining a threat level corresponding to a security risk posed by the heat source with respect to the environment.
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公开(公告)号：US10444077B2
公开(公告)日：2019-10-15
申请号：US15705298
申请日：2017-09-15
发明人： Artur Suntken
摘要： A system for measuring a sensor having two terminals includes first and second transistors with first and second control signal inputs connected to the sensor terminals. The system further includes a current divider including a reference current input, a current divider control input and first and second current outputs connected to the first and second transistors. First and second load circuits are connected to the first and second transistors at first and second differential output nodes. First and second integrating circuits are connected to the first and second differential output nodes. A comparator is driven by first and second differential output nodes. The comparator output controls a digital integrator. A value of a current divider control signal driving the current divider control input depends at least indirectly from the digital integrator.
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