公开(公告)号：US5612685A

公开(公告)日：1997-03-18

申请号：US618855

申请日：1996-03-20

申请人： David C. Oliva

发明人： David C. Oliva

IPC分类号： G01S13/56 ,  G01S13/86 ,  G01S13/91 ,  G01S13/92 ,  G08G1/0965 ,  H01Q1/32 ,  H01Q1/10

CPC分类号： H01Q1/3233 ,  G01S13/56 ,  G08G1/0965 ,  G01S13/86 ,  G01S13/91 ,  G01S13/92

摘要： A combined motion detector/transmitter device for a traffic information warning system is disclosed. The device includes first and second oscillators for transmitting first and second carrier signals, respectively. The first carrier signal has a first carrier signal frequency and the second carrier signal has a second carrier signal frequency. The carrier signals are used to transmit a message regarding a traffic situation based upon either the magnitude of the frequency difference between the first and second carrier signal frequencies or the specific frequency locations of the carrier signals. The first and second oscillators also set up first and second disturbance fields, respectively. A first reflected signal receiver is associated with the first oscillator and receives a first reflected signal when a target is within the first disturbance field. A second reflected signal receiver is associated with the second oscillator and receives a second reflected signal when a target is within the second disturbance field. First and second detector circuits are provided for detecting the presence or absence of a moving target in the first and second disturbance fields, respectively. Finally, the device includes an indicator for indicating the detected presence of a moving target in either the first or second disturbance fields.

摘要翻译： 公开了一种用于交通信息警告系统的组合运动检测器/发射机装置。 该装置包括分别用于发送第一和第二载波信号的第一和第二振荡器。 第一载波信号具有第一载波信号频率，第二载波信号具有第二载波信号频率。 载波信号用于基于第一和第二载波信号频率之间的频率差或载波信号的特定频率位置的幅度来传输关于业务情况的消息。 第一和第二振荡器分别设置第一和第二扰动场。 第一反射信号接收机与第一振荡器相关联，并且当目标在第一干扰场内时接收第一反射信号。 第二反射信号接收机与第二振荡器相关联，并且当目标在第二干扰场内时接收第二反射信号。 提供第一和第二检测器电路，用于分别检测第一和第二干扰场中移动目标的存在或不存在。 最后，该设备包括用于指示在第一或第二干扰场中检测到移动目标的存在的指示符。

公开(公告)号：US5594432A

公开(公告)日：1997-01-14

申请号：US564468

申请日：1995-11-29

申请人： David C. Oliva ,  Max W. Rogers

发明人： David C. Oliva ,  Max W. Rogers

IPC分类号： G08G1/0965 ,  G08G1/0967 ,  G08G1/16 ,  G08G1/09

CPC分类号： G08G1/096758 ,  G08G1/0965 ,  G08G1/096775 ,  G08G1/16 ,  G08G1/162

摘要： A traffic information warning system for conveying traffic information from a traffic advisory site to a vehicle is disclosed. The traffic warning site comprises an emergency vehicle, a roadside hazard, or the like. The system comprises a transmitter adapted for placement at the advisory site and a receiver adapted for placement at the vehicle. The transmitter includes a first oscillator for transmitting a first carrier signal having a first carrier frequency and a second oscillator for transmitting a second carrier signal having a second carrier frequency. The first carrier frequency and the second carrier frequency are spaced apart by a predetermined frequency difference. The transmitter also includes a modulator for modulating both carrier signals with an identical modulating signal reflective of a traffic situation. The receiver includes scanning circuitry, in the form of a microprocessor, for scanning across a predetermined frequency range to detect carrier signals separated by the predetermined frequency difference and a demodulator for retrieving a first retrieved modulating signal about the first carrier signal and a second retrieved modulating signal about the second carrier signal. The receiver also uses the microprocessor to compare the first retrieved modulating signal to the second retrieved modulating signal and to determine whether the first and second retrieved modulating signal are identical. Additionally, the receiver includes an announcing device for announcing a message regarding the traffic situation.

摘要翻译： 公开了一种用于将交通信息从交通咨询站点传送到车辆的交通信息警报系统。 交通警示站包括紧急车辆，路边危险物等。 该系统包括适于放置在咨询地点的发射器和适于放置在车辆处的接收器。 发射机包括用于发射具有第一载波频率的第一载波信号的第一振荡器和用于发射具有第二载波频率的第二载波信号的第二振荡器。 第一载波频率和第二载波频率间隔开预定的频率差。 发射机还包括调制器，用于调制具有反映交通状况的相同调制信号的两个载波信号。 接收机包括微处理器形式的扫描电路，用于跨预定频率范围进行扫描，以检测由预定频率差分开的载波信号;以及解调器，用于检索关于第一载波信号的第一检索调制信号和第二检索调制信号 关于第二载波信号的信号。 接收机还使用微处理器将第一检索到的调制信号与第二检索调制信号进行比较，并确定第一和第二检索调制信号是否相同。 此外，接收机包括用于通知关于交通状况的消息的通知装置。

公开(公告)号：US06236336B1

公开(公告)日：2001-05-22

申请号：US09256883

申请日：1999-02-24

申请人： David C. Oliva ,  Phillip Thistlethwaite

发明人： David C. Oliva ,  Phillip Thistlethwaite

IPC分类号： G08G100

CPC分类号： G08G1/164

摘要： A traffic information warning system for conveying first and second messages regarding a traffic situation from a traffic advisory site is disclosed. The system comprises a transmitter adapted for placement at the advisory site and a receiver. The transmitter includes an oscillator for transmitting a first carrier signal and a second carrier signal. The first carrier signal has a first discrete carrier frequency and the second carrier signal has a second discrete carrier frequency. The first and second discrete carrier signal frequencies are located at a frequency location. The first message of a traffic situation is reflective of the specific frequency locations of the first and second discrete frequencies. A modulator modulates the first carrier signal with a modulating signal reflective of the second message regarding the traffic situation. The second carrier signal comprises an unmodulated signal. The receiver includes scanning circuitry for scanning across a predetermined frequency range to detect the first and second carrier signals and circuitry responsive to the detecting means for determining the first message regarding the traffic situation. The receiver further includes a demodulator for retrieving the first retrieved modulating signal about the first carrier signal, and an annunciator for announcing the first and second messages regarding the traffic situation.

摘要翻译： 公开了一种用于从交通咨询站点传送关于交通状况的第一和第二消息的交通信息警告系统。 该系统包括适于放置在咨询站点处的发射器和接收器。 发射机包括用于发送第一载波信号和第二载波信号的振荡器。 第一载波信号具有第一离散载波频率，第二载波信号具有第二离散载波频率。 第一和第二离散载波信号频率位于频率位置。 交通状况的第一个消息反映了第一和第二离散频率的特定频率位置。 调制器利用反映关于交通状况的第二消息的调制信号来调制第一载波信号。 第二载波信号包括未调制的信号。 接收机包括用于扫描预定频率范围的扫描电路，以检测第一和第二载波信号以及响应于检测装置确定关于交通情况的第一消息的电路。 该接收机还包括用于检索第一检索到的关于第一载波信号的调制信号的解调器，以及用于通知关于交通情况的第一和第二消息的信号器。

公开(公告)号：US5784021A

公开(公告)日：1998-07-21

申请号：US591706

申请日：1996-01-25

申请人： David C. Oliva

发明人： David C. Oliva

IPC分类号： G01S7/02 ,  H03B1/04 ,  H03B5/18 ,  H03D9/06 ,  G01S7/40

CPC分类号： H03D9/0641 ,  G01S7/021 ,  H03B2202/05 ,  H03B2202/086 ,  H03B5/1864 ,  H03D2200/009

摘要： A noiseless radar detector with a dielectric resonator to suppress stray electromagnetic radiation generated by a local oscillator within the radar detector is disclosed. The dielectric resonator acts as an RF microwave absorber/attenuator if the resonant frequency of the dielectric resonator corresponds to the frequency of the interference from the local oscillator.

摘要翻译： 公开了一种具有介质谐振器的无噪声雷达检测器，用于抑制由雷达检测器内的本地振荡器产生的杂散电磁辐射。 如果介质谐振器的谐振频率对应于来自本地振荡器的干扰的频率，则介质谐振器用作RF微波吸收器/衰减器。

公开(公告)号：US5497148A

公开(公告)日：1996-03-05

申请号：US297969

申请日：1994-08-30

申请人： David C. Oliva

发明人： David C. Oliva

IPC分类号： G08G1/0965 ,  G08G1/16 ,  G08G1/09

CPC分类号： G08G1/162 ,  G08G1/0965 ,  G08G1/16

摘要： A traffic information warning system for conveying traffic information from a traffic advisory site to a vehicle is disclosed. The traffic warning site comprises an emergency vehicle, a roadside hazard, or the like. The system comprises a transmitter adapted for placement at the advisory site and a receiver adapted for placement at the vehicle. The transmitter includes a first oscillator for transmitting a first unmodulated carrier signal at a first frequency and a second oscillator for transmitting a second unmodulated carrier signal at a second frequency. The first and second frequencies define the traffic information. The receiver includes a detector for detecting the first and second signals and an announcing device for announcing the traffic information.

摘要翻译： 公开了一种用于将交通信息从交通咨询站点传送到车辆的交通信息警报系统。 交通警示站包括紧急车辆，路边危险物等。 该系统包括适于放置在咨询地点的发射器和适于放置在车辆处的接收器。 发射机包括用于以第一频率发送第一未调制载波信号的第一振荡器和用于以第二频率传输第二未调制载波信号的第二振荡器。 第一和第二频率定义交通信息。 接收机包括用于检测第一和第二信号的检测器和用于通知交通信息的通知装置。