公开(公告)号：US06700114B2

公开(公告)日：2004-03-02

申请号：US10150073

申请日：2002-05-20

申请人： Tamotsu Mizuno ,  Takamoto Watanabe ,  Katsuji Kosaka ,  Yoshiaki Hoashi

发明人： Tamotsu Mizuno ,  Takamoto Watanabe ,  Katsuji Kosaka ,  Yoshiaki Hoashi

IPC分类号： H01J314

CPC分类号： G02B26/105

摘要： A system working to detect a reciprocating motion of an object such as a scanner mirror of an optical scanner. The system is designed to compensate for an error which is concluded in an amplified sensor signal used to determine a reference position of the scanner mirror and which is sensitive to a change in environmental condition of use such as a change in ambient temperature. The system also works to monitor a change in amplitude of swing of the scanner mirror accurately to keep it constant.

摘要翻译： 一种用于检测物体（例如光学扫描仪的扫描镜）的往复运动的系统。 该系统被设计为补偿用于确定扫描器反射镜的参考位置的放大的传感器信号中所确定的误差，并且其对使用环境条件的变化（例如环境温度的变化）敏感。 该系统还可以准确地监测扫描仪镜的摆幅幅度变化，以保持其恒定。

公开(公告)号：US5805527A

公开(公告)日：1998-09-08

申请号：US773901

申请日：1996-12-27

申请人： Yoshiaki Hoashi ,  Noriaki Shirai

发明人： Yoshiaki Hoashi ,  Noriaki Shirai

IPC分类号： G01S7/292 ,  G01S7/487 ,  G01S7/497 ,  G01S17/10 ,  G01S17/93 ,  G01S15/00

CPC分类号： G01S7/489 ,  G01S17/10 ,  G01S7/4865 ,  G01S7/487 ,  G01S7/497 ,  G01S17/936

摘要： A distance measuring apparatus includes a wave transmitting device for emitting a transmission wave. A wave receiving device is operative for receiving a reflection wave, which results from reflection of the transmission wave by a reflection object, as a reception wave. A time difference measuring device is operative for measuring a time difference between a moment at which the wave transmitting device emits the transmission wave and a moment at which the wave receiving device receives the reception wave. A distance calculating device is operative for calculating a distance to the reflection object on the basis of the time difference calculated by the time difference measuring device. An error correcting device is operative for detecting a time interval during which a signal level of the reception wave remains higher than a predetermined threshold level, and for correcting an error in the calculated distance to the reflection object on the basis of the detected time interval, the error being caused by a difference in intensity of the reception wave.

摘要翻译： 距离测量装置包括用于发射发射波的波发射装置。 波接收装置用于接收由反射物体的透射波的反射产生的反射波作为接收波。 时差测量装置用于测量波发射装置发射发射波的时刻与波接收装置接收到接收波的时刻之间的时间差。 距离计算装置用于根据由时差测量装置计算的时间差计算到反射物体的距离。 误差校正装置用于检测接收波的信号电平保持高于预定阈值电平的时间间隔，并且基于检测到的时间间隔来校正计算出的与反射对象距离的误差， 误差由接收波的强度差引起。

公开(公告)号：US20080246942A1

公开(公告)日：2008-10-09

申请号：US12010348

申请日：2008-01-24

申请人： Yoshiaki Hoashi

发明人： Yoshiaki Hoashi

IPC分类号： G01C3/08 ,  G01S13/00

CPC分类号： G01S17/936 ,  G01C3/08 ,  G01S7/497 ,  G01S2007/4975

摘要： A laser radar sensor includes a photoreceptor, a dummy circuit, an amplifier, a selector, and the first and the second detection circuits. A photoreception signal outputted from the photoreceptor and an output signal of the dummy circuit are amplified by the amplifier, and inputted to the second detection circuit. A noise component included in the photoreception signal based on the output signal of the dummy circuit when distance detection is not performed. The distance detection is performed based on the reception signal from which the noise component is removed. As a result, a reduction in detectable distance of the laser radar sensor is less likely to occur. Furthermore, the noise component is detected using the dummy circuit and the selector. Thus, the consideration of the predetermined rotation angle is not required in optical system design and limiting factors in the optical system design can be reduced.

摘要翻译： 激光雷达传感器包括感光体，虚拟电路，放大器，选择器以及第一和第二检测电路。 从感光体输出的光接收信号和虚拟电路的输出信号由放大器放大，并被输入到第二检测电路。 当不执行距离检测时，基于虚拟电路的输出信号，包括在光接收信号中的噪声分量。 基于除去噪声成分的接收信号进行距离检测。 结果，不太可能发生激光雷达传感器的可检测距离的减小。 此外，使用虚拟电路和选择器来检测噪声分量。 因此，在光学系统设计中不需要考虑预定的旋转角度，并且可以减少光学系统设计中的限制因素。

公开(公告)号：US07242461B2

公开(公告)日：2007-07-10

申请号：US11237105

申请日：2005-09-28

申请人： Yoshiaki Hoashi

发明人： Yoshiaki Hoashi

IPC分类号： G01C3/08

CPC分类号： G01S7/487 ,  G01S17/48 ,  G01S17/936

摘要： An integrator of a vehicular radar system has multiple switches and multiple capacitors, which are connected with the switches, for each one of photoreceptive elements. The integrator integrates light reception signals, which are output from the photoreceptive elements, by switching the switches to a connected state one after another in a predetermined order at a predetermined time interval until a predetermined time passes after every emission of the laser light and by switching the switches to the connected state one after another in a predetermined order at a predetermined time interval if the laser light is emitted predetermined times. Thus, the integrator can integrate the light reception signals, which are output from the multiple photoreceptive elements, in parallel.

摘要翻译： 对于每一个感光元件，车载雷达系统的积分器具有多个开关和多个电容器，其与开关连接。 积分器将从感光元件输出的光接收信号以规定的时间间隔一个接一个地以预定的顺序将开关切换到连接状态，直至在每次发出激光后经过预定的时间，并通过切换 如果激光预定时间发射，则以预定顺序以预定顺序依次切换到连接状态。 因此，积分器可以并入从多个感光元件输出的光接收信号。

公开(公告)号：US07148467B2

公开(公告)日：2006-12-12

申请号：US11081028

申请日：2005-03-15

申请人： Yoshiaki Hoashi

发明人： Yoshiaki Hoashi

IPC分类号： H01J40/14 ,  G08B13/18

CPC分类号： G01S7/4972

摘要： An object detecting apparatus for a vehicle has a light radiation unit and a light receiver unit disposed in a case having a light radiating window and a light receiving window for detecting an object or a distance to the object. The apparatus further has a case inside condition sensor for detecting a case inside condition, which changes when the case is broken. The case inside condition sensor may detect temperatures, humidity or pressures in the case. A breakage of the case is detected from a change in the detected case inside conditions. A case outside condition may be additionally used to detect the breakage of the case.

摘要翻译： 一种用于车辆的物体检测装置具有光辐射单元和光接收单元，该光接收单元设置在具有用于检测物体的光照射窗和用于检测物体的距离的光接收窗口的情况下。 该装置还具有用于检测箱体内部状况的壳体内部状况传感器，其在壳体破裂时发生变化。 条件传感器内的情况可能会检测到这种情况下的温度，湿度或压力。 从检测到的案件内部条件的变化中检测到案件的破损。 外部情况的情况可以另外用于检测壳体的断裂。

公开(公告)号：US20050200832A1

公开(公告)日：2005-09-15

申请号：US11075182

申请日：2005-03-08

申请人： Nobuharu Kawai ,  Yoshiaki Hoashi

发明人： Nobuharu Kawai ,  Yoshiaki Hoashi

IPC分类号： G01C3/06 ,  G01B11/00 ,  G01C3/08 ,  G01S7/481 ,  G01S7/497 ,  G01S17/10 ,  G01S17/93

CPC分类号： G01S17/936 ,  G01S7/481 ,  G01S7/4817 ,  G01S7/484 ,  G01S7/4868 ,  G01S7/497

摘要： An object detecting apparatus for a vehicle has a light radiation unit and a light receiver unit disposed in a case for detecting an object or a distance to the object. When a vehicle is at a stop, the apparatus detects an output power of a laser light radiated from the light radiation unit by the light receiving unit and feedback-controls the output power of the laser light to a predetermined level based on the detected output power of the laser light. The feedback control is effected by an amplifier circuit, a pulse width detector circuit and a current regulator circuit. Thus, the output power of the laser light is reduced not to damage human eyes when the vehicle is at a stop.

摘要翻译： 用于车辆的物体检测装置具有设置在用于检测物体的物体或距物体的距离的壳体中的光辐射单元和光接收单元。 当车辆停止时，该装置检测由光接收单元从光辐射单元辐射的激光的输出功率，并且基于检测到的输出功率反馈控制激光的输出功率到预定水平 的激光。 反馈控制由放大器电路，脉冲宽度检测器电路和电流调节器电路来实现。 因此，当车辆停止时，激光的输出功率降低，不会损伤人眼。

公开(公告)号：US06301003B1

公开(公告)日：2001-10-09

申请号：US09369249

申请日：1999-08-05

申请人： Noriaki Shirai ,  Yoshiaki Hoashi ,  Takeshi Matsui

发明人： Noriaki Shirai ,  Yoshiaki Hoashi ,  Takeshi Matsui

IPC分类号： B60T716

CPC分类号： G01S17/936 ,  G01S7/4816 ,  G01S7/4817 ,  G01S17/42

摘要： An optical distance measuring apparatus is provided which is designed to transmit a laser beam in a cycle to scan a two-dimensional detection zone and to receive a return of the laser beam from a target through a light sensitive unit to determine data on the distance to the target. The light sensitive unit is made of a matrix of cells which are selectively activated in each scan cycle of the laser beam for minimizing optical interference with incoming light other than the return of the laser beam from the target in determining the data on the distance to the target.

摘要翻译： 提供了一种光学距离测量装置，其被设计成在循环中传输激光束以扫描二维检测区域并且接收来自目标的激光束通过光敏单元的返回，以确定关于距离 目标。 光敏单元由在激光束的每个扫描周期中被选择性地激活的单元矩阵制成，用于在确定与目标的距离上的数据之间最小化来自目标的激光束返回的入射光的光学干涉 目标。

公开(公告)号：US06218982B1

公开(公告)日：2001-04-17

申请号：US09418603

申请日：1999-10-15

申请人： Noriaki Shirai ,  Yoshiaki Hoashi ,  Takeshi Matsui

发明人： Noriaki Shirai ,  Yoshiaki Hoashi ,  Takeshi Matsui

IPC分类号： G01S1326

CPC分类号： G01S17/32 ,  G01S7/493 ,  G01S13/325 ,  G01S17/36

摘要： A pseudo random noise code is generated synchronously with a reference clock signal. A first forward electromagnetic wave is transmitted in response to the pseudo random noise code. A first echo wave is received which is caused by reflection of the first forward electromagnetic wave at an object. The received first echo wave is converted into a binary signal. A value of a correlation between the binary signal and the pseudo random noise code is repetitively calculated at a predetermined period having a synchronous relation with the reference clock signal. A time interval taken by the first forward electromagnetic wave and the first echo wave to travel to and from the object is measured in response to a timing at which the calculated correlation value peaks. Then, a second forward electromagnetic wave is transmitted in response to a transmitted pulse signal is transmitted. A second echo wave related to the second forward electromagnetic wave is received. The received second echo wave is converted into a received pulse signal. A delay circuit defers the transmitted pulse signal by a delay time corresponding to the measured time interval to generate a delayed transmitted pulse signal. A phase difference between the received pulse signal and the delayed transmitted pulse signal is measured at a resolution higher than a resolution corresponding to the predetermined period of the correlation-value calculation. A distance to the object is calculated on the basis of the measured time interval and the measured phase difference.

摘要翻译： 伪随机噪声码与参考时钟信号同步产生。 响应于伪随机噪声码发送第一正向电磁波。 接收到由物体上的第一正向电磁波的反射引起的第一回波。 接收的第一回波被转换为二进制信号。 在与参考时钟信号具有同步关系的预定周期内重复计算二进制信号和伪随机噪声码之间的相关值。 响应于所计算的相关值达峰值的定时，测量第一前向电磁波和第一回波在与物体之间行进的时间间隔。 然后，响应于发送的脉冲信号发送第二正向电磁波。 接收与第二正向电磁波相关的第二回波。 接收的第二回波被转换成接收的脉冲信号。 延迟电路将发送的脉冲信号延迟与测量的时间间隔相对应的延迟时间，以产生延迟的发送脉冲信号。 以比相关值计算的预定周期对应的分辨率高的分辨率来测量接收脉冲信号和延迟的发送脉冲信号之间的相位差。 基于测量的时间间隔和测量的相位差计算到物体的距离。