公开(公告)号：US4950914A

公开(公告)日：1990-08-21

申请号：US174555

申请日：1988-03-29

申请人： Norimitsu Kurihara ,  Yoshikazu Tsuchiya ,  Makie Morota ,  Junichi Fukuda

发明人： Norimitsu Kurihara ,  Yoshikazu Tsuchiya ,  Makie Morota ,  Junichi Fukuda

IPC分类号： B60R21/01 ,  G01P15/08 ,  G01P15/09 ,  G01P21/00

CPC分类号： B60R21/01332 ,  B60R21/0132 ,  G01P15/0891 ,  G01P15/09 ,  G01P21/00

摘要： A collision detection system for a vehicle comprising an acceleration sensor for sensing the acceleration and deceleration of the vehicle wherein the acceleration sensor is a piezoelectric sensor; signal processing circuit coupled to the piezoelectric sensor for generating a first output when the vehicle deceleration is greater than a predetermined amount. A diagnostic pulse generator is coupled to the piezoelectric sensor for applying a diagnostic pulse to the piezoelectric sensor for distorting the piezoelectric sensor, thereby causing the piezoelectric sensor to generate an electrical output. The electrical output is applied to the signal processing circuit wherein the signal processing circuit produces a second output in response thereto. The piezoelectric sensor is mounted on a pendulum such that when the vehicle accelerates or decelerates, the pendulum moves relative to the vehicle thereby distorting the piezoelectric sensor whereby the piezoelectric sensor produces an output as a function of the distortion. The piezoelectric sensor includes an electrode which is divided into a plurality of electrode segments. At least one of the electrode segments is an output electrode for providing an electrical signal as a function of the distortion of the piezoelectric sensor and at least one of the electrode segments is an input electrode for receiving an electrical signal and distorting the piezoelectric sensor in response thereto.

摘要翻译： 一种用于车辆的碰撞检测系统，包括用于感测车辆的加速和减速的加速度传感器，其中加速度传感器是压电传感器; 耦合到压电传感器的信号处理电路，用于当车辆减速度大于预定量时产生第一输出。 诊断脉冲发生器耦合到压电传感器，用于向压电传感器施加诊断脉冲以使压电传感器变形，从而使压电传感器产生电输出。 电输出被施加到信号处理电路，其中信号处理电路响应于此产生第二输出。 压电传感器安装在摆锤上，使得当车辆加速或减速时，摆锤相对于车辆移动，从而扭曲压电传感器，由此压电传感器产生作为失真的函数的输出。 压电传感器包括被分成多个电极段的电极。 电极段中的至少一个是用于提供作为压电传感器的失真的函数的电信号的输出电极，并且至少一个电极段是用于接收电信号并且响应于压电传感器变形的输入电极 到此。

公开(公告)号：US4873452A

公开(公告)日：1989-10-10

申请号：US247559

申请日：1988-09-22

申请人： Makie Morota ,  Junichi Fukuda

发明人： Makie Morota ,  Junichi Fukuda

IPC分类号： G01P15/00 ,  B60R21/00 ,  B60R21/01 ,  B60R21/16 ,  G01R31/00

CPC分类号： B60R21/01332 ,  B60R21/0132 ,  G01R31/006

摘要： It is an object of the present invention to provide a collision detector for a vehicle, capable of avoiding the adverse effect of the diagnostic pulses on the detection of a collision so that the failure of the acceleration sensor can be diagnosed correctly. A collision detector in accordance with the present invention comprises a diagnostic pulse generator which applies diagnostic pulses to an acceleration sensor to detect the failure of the acceleration sensor, and a diagnostic circuit which stops the output diagnostic pulses of the diagnostic pulse generator when the output of the acceleration sensor exceeds a malfunction avoidance level which is lower than a reference collision level.

摘要翻译： 本发明的目的是提供一种用于车辆的碰撞检测器，其能够避免诊断脉冲对碰撞检测的不良影响，从而可以正确地诊断加速度传感器的故障。 根据本发明的碰撞检测器包括：诊断脉冲发生器，其向加速度传感器施加诊断脉冲以检测加速度传感器的故障;以及诊断电路，当诊断脉冲发生器的输出停止时，停止诊断脉冲发生器的输出诊断脉冲 加速度传感器超过低于参考碰撞水平的故障回避水平。

公开(公告)号：US4764911A

公开(公告)日：1988-08-16

申请号：US872788

申请日：1986-06-10

申请人： Makie Morota ,  Shoji Yoshikawa

发明人： Makie Morota ,  Shoji Yoshikawa

IPC分类号： G11B7/085 ,  G11B21/08 ,  G11B21/10

CPC分类号： G11B7/08529 ,  G11B7/08517

摘要： An optical information recording and/or reproducing apparatus is provided with a finely moving device. The movement of an optical device converging and radiating a light beam onto an optical information recording medium, is controlled to be able to finely move the position of a spot light radiated onto the recording medium. A coarsely moving device moves an optical head provided with the finely moving device and an optical system. A track crossing velocity monitoring device detects whether the track crossing velocity at which the spot light radiated onto the recording medium crosses the tracks of the recording medium is below a predetermined value. After a coarse access close to an objective track is made by the coarsely moving device, when the track crossing velocity is below the predetermined value, the clamping applied to the optical device at the time of the coarse access will be released.

摘要翻译： 光学信息记录和/或再现装置设置有精细移动的装置。 将光束会聚并将光束照射到光学信息记录介质上的光学装置的移动被控制为能够精细地移动照射到记录介质上的点光的位置。 粗移动装置移动设置有微细装置的光学头和光学系统。 轨迹交叉速度监视装置检测辐射到记录介质上的光点与记录介质的轨道交叉的轨迹交叉速度是否低于预定值。 在通过粗略移动的装置进行接近物镜轨迹的粗略访问之后，当轨道交叉速度低于预定值时，在粗略访问时施加到光学装置的夹紧将被释放。

公开(公告)号：US5234228A

公开(公告)日：1993-08-10

申请号：US817010

申请日：1992-01-03

申请人： Makie Morota ,  Katuhiko Sasakawa

发明人： Makie Morota ,  Katuhiko Sasakawa

IPC分类号： B60R21/16 ,  B60R21/01 ,  B60R21/0136 ,  B60R21/015 ,  B60R21/20

CPC分类号： B60R21/017 ,  B60R21/015

摘要： An air bag for a vehicle is contained, respectively, in a steering wheel which is disposed in front of a driver's seat and in a dashboard which is disposed in front of a passenger's seat. When a seat switch has detected that there is no passenger seated in the passenger's seat, the inflation of the air bag for the passenger's seat is prohibited. Two impact sensors for detecting the longitudinal and lateral impact forces are provided. When that direction .theta. of the impact force which is obtained by the two sensors deviates towards the passenger's seat beyond a predetermined angle, the prohibition of inflation of the air bag for the passenger's seat is cancelled. When the vehicle is collided at a portion which is deviated towards the passenger's seat, the air bag for the passenger's seat is also inflated to alleviate the movement of the driver towards the passenger's seat. Instead of detecting the direction of the impact force by the two impact sensors, a switch-type acceleration sensor which is switched on when the impact force towards the passenger's seat is above a predetermined value may also be used so that the air bag for the passenger's seat can be inflated.

摘要翻译： 车辆用安全气囊分别被容纳在设置在驾驶员座椅前方的方向盘和设置在乘客座椅前方的仪表板中。 当座椅开关检测到乘客座位上没有乘客时，禁止乘客座位的气囊膨胀。 提供了用于检测纵向和横向冲击力的两个冲击传感器。 当由两个传感器获得的冲击力的方向θ朝向乘客座位偏移超过预定角度时，取消了乘客座椅气囊膨胀的禁止。 当车辆在朝向乘客座位偏移的部分碰撞时，乘客座椅的气囊也被充气以减轻驾驶员朝向乘客座位的运动。 代替检测两个碰撞传感器的冲击力的方向，还可以使用当朝向乘客座椅的冲击力高于预定值时接通的开关式加速度传感器，使得乘客的气囊 座位可以充气。

公开(公告)号：US5080395A

公开(公告)日：1992-01-14

申请号：US580440

申请日：1990-09-10

申请人： Makie Morota ,  Koichi Kamiji

发明人： Makie Morota ,  Koichi Kamiji

IPC分类号： G01P15/00 ,  B60R21/01 ,  B60R21/16

CPC分类号： B60R21/0176

摘要： An improved occupant protective system for an automotive vehicle includes an occupant-protecting member, an acceleration sensor for detecting acceleration of the vehicle, an actuator for actuating the occupant-protecting member, and a monitoring device for monitoring potentials of two signal lines connected respectively to the opposite ends of the actuator and having portions thereof extending substantially parallel with each other. One of the signal lines is connected between the acceleration sensor and the actuator. When the vehicle undergoes acceleration having a magnitude greater than a predetermined value, the acceleration sensor operates to cause an increased amount of electric current to flow through the two signal lines to thereby cause the actuator to operate. The improved occupant protective system includes a monitoring line extending parallel with the two signal lines along the portions of the two signal lines extending substantially parallel with each other. The monitoring line has one end thereof being open. A voltage, which is different from the potentials of the two signal lines when the vehicle is normally running, is applied to another end of the monitoring line.

摘要翻译： 用于机动车辆的改进的乘员保护系统包括乘员保护构件，用于检测车辆的加速度的加速度传感器，用于起动乘员保护构件的致动器以及用于监视分别连接到两个信号线的电位的监视装置 致动器的相对端并且其部分彼此基本平行地延伸。 信号线之一连接在加速度传感器和执行机构之间。 当车辆经历了大于预定值的加速度时，加速度传感器操作以使得增加的电流量流过两条信号线，从而使致动器工作。 改进的乘员保护系统包括沿着基本上彼此平行延伸的两个信号线的部分平行于两个信号线延伸的监视线。 监控线路的一端开放。 当车辆正常行驶时，与两条信号线的电位不同的电压被施加到监视线路的另一端。

公开(公告)号：US4761773A

公开(公告)日：1988-08-02

申请号：US840928

申请日：1986-03-18

申请人： Hiroo Okada ,  Yoshiaki Ikeda ,  Makie Morota

发明人： Hiroo Okada ,  Yoshiaki Ikeda ,  Makie Morota

IPC分类号： G11B7/085 ,  G11B7/09 ,  G11B7/00 ,  G11B21/10

CPC分类号： G11B7/08505 ,  G11B7/08517

摘要： An optical pickup is arranged under an optical disk. Tracks of the disk are irradiated with a laser beam from the pickup. A beam reflected by a given track becomes incident on the pickup. A tracking error signal from the pickup is supplied to a lens moving actuator through a gain phase compensating circuit and a lens driving circuit, and an objective lens in the pickup is radially moved along disk. The tracking error signal is supplied to a voice coil motor through the phase compensating circuit. A carriage carrying the pickup thereon can be radially moved along the disk. When a tracking instruction is generated, the lens driving circuit drives the objective lens to start tracking. Meanwhile, the low-frequency components of the tracking error signal which are lower than the resonance frequency of the lens tracking circuit are amplified by the gain phase compensating circuit. When the tracking error signal is converged within a predetermined threshold range, the amplification of the low-frequency components of the tracking error signal is stopped. At the same time, the operation of the voice coil motor is started. Tracking is performed by both the objective lens and the carriage to achieve two-step servo tracking.

摘要翻译： 光拾取器设置在光盘下方。 使用来自拾取器的激光束照射盘的轨道。 由给定轨道反射的光束入射到拾取器上。 来自拾取器的跟踪误差信号通过增益相位补偿电路和透镜驱动电路提供给透镜移动致动器，并且拾取器中的物镜沿着盘径向移动。 跟踪误差信号通过相位补偿电路提供给音圈电机。 承载拾取器的托架可以沿着盘径向移动。 当产生跟踪指令时，透镜驱动电路驱动物镜开始跟踪。 同时，跟踪误差信号的低于镜头跟踪电路的谐振频率的低频分量被增益相位补偿电路放大。 当跟踪误差信号收敛在预定阈值范围内时，停止跟踪误差信号的低频分量的放大。 同时，启动音圈马达的动作。 通过物镜和托架进行跟踪，以实现两步伺服跟踪。