公开(公告)号：US4580250A

公开(公告)日：1986-04-01

申请号：US517455

申请日：1983-07-26

申请人： Yoshiyuki Kago ,  Shigeyuki Akita ,  Koichi Mizuno

发明人： Yoshiyuki Kago ,  Shigeyuki Akita ,  Koichi Mizuno

IPC分类号： B60R21/00 ,  B60W30/00 ,  G01S13/86 ,  G01S15/93 ,  H04B11/00

CPC分类号： G01S15/931 ,  Y10S367/909

摘要： An ultrasonic detection circuit for detecting obstacles behind a backing motor vehicle, and an ultrasonic communication circuit are automatically switched such that the ultrasonic detection circuit is operable only when the communication circuit is not in use. Furthermore, the ultrasonic detection circuit may be operated only when the motor vehicle is in one or more particular operating conditions. The system comprises a rear ultrasonic transducer used for both the detection circuit and for the communication circuit so that detection of obstacles behind the vehicle and communication with another motor vehicle behind the vehicle are possible, and a front ultrasonic transducer used for only the communication circuit so that communication with another motor vehicle ahead of the vehicle is also possible. The rear and front transducers are directly connected to a call signal responding circuit of the communication circuit so that the call signal responding circuit is capable of responding to a call signal from a vehicle ahead of or behind the vehicle.

摘要翻译： 自动切换用于检测背面机动车辆后方的障碍物的超声波检测电路和超声波通信电路，使得超声波检测电路仅在通信电路不使用时才可操作。 此外，只有当机动车辆处于一个或多个特定操作条件时，超声检测电路才可以被操作。 该系统包括用于检测电路和通信电路两者的后部超声波换能器，使得能够检测车辆后方的障碍物并与车辆后面的另一辆汽车通信，并且仅用于通信电路的前置超声换能器 与车辆前方的另一辆汽车的通信也是可能的。 后传感器和前传感器直接连接到通信电路的呼叫信号响应电路，使得呼叫信号响应电路能够响应来自车辆前方或后方的车辆的呼叫信号。

公开(公告)号：US4524356A

公开(公告)日：1985-06-18

申请号：US401023

申请日：1982-07-22

申请人： Masao Kodera ,  Shigeyuki Akita ,  Yasuhisa Yoshino

发明人： Masao Kodera ,  Shigeyuki Akita ,  Yasuhisa Yoshino

IPC分类号： B60R21/00 ,  B60W30/00 ,  G01S7/56 ,  G01S15/93 ,  G01S17/93 ,  G08G1/00

CPC分类号： G01S15/931 ,  Y10S367/909

摘要： An obstacle monitoring device for the rear of a vehicle comprising a plurality of ultrasonic obstacle detectors which are operated sequentially at a predetermined time interval, and an electronic monitor for supplying the obstacle detectors with their operational timing sequences at the predetermined time intervals and for determining distance information for each detector based on the changing pulse width of electric currents for each of the obstacle detectors within a particular time interval, which pulse widths correspond to the distance between an obstacle and the rear of the vehicle. A single transmission line connects the obstacle detectors with the monitor so that the number of wires in a wire-harness is reduced between the obstacle detectors (outside the vehicle) and the monitor (inside the vehicle).

摘要翻译： 一种用于车辆后部的障碍物监视装置，包括以预定时间间隔顺序操作的多个超声波障碍物检测器，以及电子监视器，用于以预定时间间隔向障碍物检测器提供其操作定时序列，并用于确定距离 基于在特定时间间隔内针对每个障碍物检测器的电流的脉冲宽度变化的每个检测器的信息，哪个脉冲宽度对应于障碍物与车辆后部之间的距离。 单个传输线将障碍物检测器与监视器连接，使得在障碍物检测器（车辆外部）和监视器（车辆内部）之间线束中的电线数量减少。

公开(公告)号：US4485322A

公开(公告)日：1984-11-27

申请号：US360767

申请日：1982-03-22

申请人： Eturo Yasuda ,  Shigeyuki Akita ,  Masao Kodera

发明人： Eturo Yasuda ,  Shigeyuki Akita ,  Masao Kodera

IPC分类号： H04R17/10 ,  B06B1/06 ,  H04R17/00 ,  H04R1/00

CPC分类号： B06B1/0603

摘要： Provided is an ultrasonic transducer having a resonator which defines a space together with a bimorph cell disposed in the ultrasonic transducer. The space is fluid-tightly closed by the top portion of the resonator, thereby to keep water, such as for example, rainwater or cleaning water from entering into the space.

摘要翻译： 提供了一种超声波换能器，其具有与设置在超声换能器中的双压电池单元一起限定空间的谐振器。 该空间由共振器的顶部流体密封，从而保持水，例如雨水或清洁水不能进入该空间。

公开(公告)号：US4451909A

公开(公告)日：1984-05-29

申请号：US329826

申请日：1981-12-11

申请人： Masao Kodera ,  Shigeyuki Akita

发明人： Masao Kodera ,  Shigeyuki Akita

IPC分类号： G01S7/529 ,  G01S15/14 ,  H03G3/00 ,  G01S15/10 ,  G01S7/52

CPC分类号： G01S15/14 ,  Y10S367/90 ,  Y10S73/90

摘要： In an ultrasonic wave distance detection system, an ultrasonic wave pulse radiated into the selected area is reflected on an object. Said reflected ultrasonic wave pulse is partly received by an ultrasonic wave transducer. The received signal is supplied to a variable gain amplifier, noise components are removed from the amplified signal through a band pass filter, the noise removed signal is detected by an envelope detector, the detected signal is compared with a predetermined level by a comparator, and the output of the comparator is applied to a flip-flop circuit.As the gain of the variable gain amplifier is set to be a lower level only at the beginning of the ultrasonic wave pulse to minimize the amplification of unnecessary signals without reducing the detection efficiency, a signal can be surely obtained which has a pulse width corresponding to the distance between the system and the object and thus the distance can be detected or measured.

摘要翻译： 在超声波距离检测系统中，辐射到选择区域的超声波脉冲反映在物体上。 所述反射的超声波脉冲部分地被超声波传感器接收。 接收到的信号被提供给可变增益放大器，通过带通滤波器从放大的信号中去除噪声分量，由包络检测器检测噪声去除信号，通过比较器将检测信号与预定电平进行比较， 比较器的输出被施加到触发器电路。 由于可变增益放大器的增益仅在超声波脉冲开始时被设定为较低电平，从而在不降低检测效率的情况下最小化不必要信号的放大，可以可靠地获得具有对应于 可以检测或测量系统与物体之间的距离，从而可以检测距离。

公开(公告)号：US4423417A

公开(公告)日：1983-12-27

申请号：US318856

申请日：1981-11-06

申请人： Hiroaki Tanaka ,  Shigeyuki Akita

发明人： Hiroaki Tanaka ,  Shigeyuki Akita

IPC分类号： G01B7/00 ,  G01D5/241 ,  G08C19/10

CPC分类号： G01B7/001 ,  G01D5/2415

摘要： A capacitance type distance or position detecting apparatus includes a first fixed plate having first and second alternately arranged electrodes. A second plate which moves with a shaft has first, second, third and fourth alternately arranged electrodes in opposing relationship to the electrodes on the first plate. First and second travel distance signals are generated due to capacitance changes caused by changes in the opposed relationship between the electrodes on the first plate and the electrodes on the second plate. Logic operations are performed on the first and second travel distance signals to generate a display of distance of travel.

摘要翻译： 电容型距离或位置检测装置包括具有第一和第二交替布置的电极的第一固定板。 与轴一起移动的第二板具有与第一板上的电极相对的第一，第二，第三和第四交替布置的电极。 由于第一板上的电极和第二板上的电极之间的相对关系的变化引起的电容变化，产生第一和第二行进距离信号。 在第一和第二行进距离信号上执行逻辑运算以产生行进距离的显示。