公开(公告)号：US06298311B1

公开(公告)日：2001-10-02

申请号：US09260224

申请日：1999-03-01

Applicant: Dennis Palmer Griffin ,  William W. Fultz ,  Robert Allan Perisho, Jr. ,  Peter Alan Thayer ,  Cunkai Wu

Inventor： Dennis Palmer Griffin ,  William W. Fultz ,  Robert Allan Perisho, Jr. ,  Peter Alan Thayer ,  Cunkai Wu

IPC: G01B1100

CPC classification number: G01S7/4868 ,  B60R21/01534 ,  B60R21/01542 ,  G01S7/4802 ,  G01S7/4814 ,  G01S7/487 ,  G01S17/026 ,  G06K9/00362 ,  G06K9/00832 ,  G06K9/2018

Abstract: An improved IR occupant position detection system that provides accurate and reliable classification and position information at a speed sufficient to timely inhibit or otherwise control deployment of occupant restraints. A two-dimensional array of IR emitters is selectively activated to periodically illuminate two or more of predetermined viewing planes in the vicinity of a passenger seating area, and the reflected IR energy is detected by a photo-sensitive receiver and analyzed to detect the presence of an occupant, to classify the occupant, and to identify and dynamically track the position of the occupant's head/torso relative to predefined zones of the passenger compartment. Modulating the intensity of the emitted IR beams with a known carrier frequency, band-pass filtering the received signal, and synchronously detecting the filtered signal distinguishes the reflected IR energy from other signals picked up by the IR receiver. Additionally, a two stage adaptive control mechanism compensates for the variation in intensity of the reflected energy with distance between the emitter and the occupant. The emitter is implemented with orthogonal anode and cathode power rails with individual IR LED elements placed at each anode-cathode intersection. Optical dispersion within the package is greatly reduced by an opaque cover layer that effectively forms a well for each LED element.

Abstract translation: 一种改进的IR乘员位置检测系统，其提供准确可靠的分类和位置信息，速度足以及时禁止或以其他方式控制乘员约束的部署。 选择性地激活IR发射器的二维阵列以周期性地照亮乘客座位区域附近的预定观察平面中的两个或更多个，并且由光敏接收器检测反射的IR能量，并分析以检测是否存在 乘客对乘客进行分类，并且相对于乘客舱的预定义区域识别和动态地跟踪乘客的头部/躯干的位置。 以已知的载波频率调制发射的IR波束的强度，对接收到的信号进行带通滤波，同步检测滤波的信号，将反射的IR能量与IR接收机拾取的其他信号进行区分。 另外，两级自适应控制机构利用发射器和乘员之间的距离补偿反射能量的强度变化。 发射器由正交阳极和阴极电源轨实现，各个IR LED元件放置在每个阳极 - 阴极交叉点处。 通过对每个LED元件有效地形成阱的不透明覆盖层大大减小了封装内的光学色散。

公开(公告)号：US06766271B2

公开(公告)日：2004-07-20

申请号：US10424374

申请日：2003-04-28

Applicant: Dennis P. Griffin ,  William W. Fultz ,  Cunkai Wu

Inventor： Dennis P. Griffin ,  William W. Fultz ,  Cunkai Wu

IPC: G01B1100

CPC classification number: B60R21/01542 ,  B60R21/01534 ,  G01S7/4802 ,  G01S7/4814 ,  G01S7/487 ,  G01S17/026 ,  G06K9/00362 ,  G06K9/00832 ,  G06K9/2018

Abstract: An improved infrared occupant detection system that provides accurate and reliable occupant intrusion information at a speed sufficient to timely inhibit or otherwise control deployment of occupant restraints. An array of infrared emitters is selectively activated to emit a predetermined pattern of IR beams in an area between the passenger seat and the point of deployment of the restraint, and the reflected IR energy is detected by a photo-sensitive receiver and analyzed to determine whether an occupant is out of position for deployment of the restraint. In the preferred embodiment, the intensity of the received beam energy and the position of the respective beam are used to construct a table of individual intrusion factors, and a composite intrusion factor based on the individual intrusion factors is categorized by magnitude to form an indication of occupant intrusion level, which in turn, is used to determine whether, or how forcefully, to deploy the restraint in the event of a serious crash.

Abstract translation: 一种改进的红外线乘员检测系统，其能够以足以及时地抑制或以其他方式控制乘员约束的部署的速度提供准确可靠的乘客入侵信息。 一组红外发射器被选择性地激活，以在乘客座位和限制器的展开点之间的区域中发射预定的IR光束图案，并且反射的IR能量由光敏接收器检测并被分析以确定是否 一名乘客不适合部署克制。 在优选实施例中，接收光束能量的强度和相应光束的位置用于构建个体入侵因子的表，并且基于各个入侵因子的复合入侵因子被分类为大小，以形成 占用入侵级别，反过来又用来确定在发生严重事故的情况下是否或强制地部署约束。

公开(公告)号：US06828559B2

公开(公告)日：2004-12-07

申请号：US10294492

申请日：2002-11-14

Applicant: Dennis P. Griffin ,  William W. Fultz ,  Cunkai Wu

Inventor： Dennis P. Griffin ,  William W. Fultz ,  Cunkai Wu

IPC: G01B703

CPC classification number: G08B13/191

Abstract: A sensor including at least two active areas for receiving light energy and a resistive layer disposed on each of the at least two active areas for providing a pair of current signals corresponding to a position of light energy of a predetermined wavelength striking the active area. The two or more active areas are electrically isolated from each other and operate independent of each other. Preferably, the two or more active areas are electrically isolated with silicon dioxide.

Abstract translation: 传感器，包括用于接收光能的至少两个有效区域和设置在所述至少两个有效区域中的每一个上的电阻层，用于提供对应于入射区域的预定波长的光能位置的一对电流信号。 两个或更多个有源区彼此电隔离并彼此独立地操作。 优选地，两个或更多个有源区域与二氧化硅电隔离。

公开(公告)号：US06323487B1

公开(公告)日：2001-11-27

申请号：US09237309

申请日：1999-01-26

Applicant: Cunkai Wu

Inventor： Cunkai Wu

IPC: G01J502

CPC classification number: B60R21/01538 ,  B60R21/01534 ,  B60R21/01556 ,  G01J5/0025 ,  G01J5/08 ,  G01J5/0806 ,  G01J5/0893 ,  G01S7/4816 ,  G01S17/026

Abstract: In a preferred embodiment, an infrared optical position detection system, including: an infrared emitter to emit infrared radiation toward an object; a receiver to receive the infrared radiation scattered by the object and to determine position of the object; the receiver including a detector; and the receiver including an optical system having two and no more than two lenses.

Abstract translation: 在优选实施例中，一种红外光学位置检测系统，包括：红外发射器，朝向物体发射红外辐射; 接收器，用于接收由物体散射的红外辐射并确定物体的位置; 所述接收器包括检测器; 并且接收机包括具有两个且不超过两个透镜的光学系统。