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公开(公告)号：USRE40111E1
公开(公告)日：2008-02-26
申请号：US09952000
申请日：2001-09-14
CPC分类号： H04B1/708 , G08B25/10 , H04B1/7075 , H04B1/70756 , H04B1/70757 , H04B1/7077 , H04B2201/70715
摘要： A remote power meter monitoring system using spread spectrum transmitters, fast frequency shift keying, spread spectrum receivers and a computer. The spread spectrum transmitter uses a chip code generator, preamble register, address register data register and oscillator coupled to a microprocessor to transmit information in a direct sequence spread spectrum signal. The spread spectrum receiver acquires synchronization of the spread spectrum signal using a microprocessor to despread and detect the transmitted information, which relates to data from a power meter.
摘要翻译： 使用扩频发射机，快速频移键控，扩频接收机和计算机的远程功率计监控系统。 扩频发射机使用芯片码发生器，前导码寄存器，地址寄存器数据寄存器和耦合到微处理器的振荡器以直接序列扩频信号传输信息。 扩频接收机使用微处理器获取扩频信号的同步，对与功率计的数据有关的发送信息进行解扩和检测。
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公开(公告)号：US5917449A
公开(公告)日：1999-06-29
申请号：US941367
申请日：1997-09-30
CPC分类号： H04W64/00 , G01S1/022 , G01S1/026 , G01S5/0081 , G01S5/02 , G01S5/021 , G01S5/0252 , G01S5/14 , G01S5/145 , G01S5/0215
摘要： The invention discloses several computation and control techniques which use historic information as well as other cues in order to enhance the accuracy of a radio position fix. These computational techniques include neural networks, mapped grid coefficients as input to a set of simultaneous or differential equations,and table lookup of correction coefficients for known low accuracy positions. The invention further discloses techniques for receiver array synchronization so that all system elements in a particular coverage area obtain a time reference appropriate for time of flight radio location measurements. The invention further teaches techniques to enhance the accuracy of a position fix by use of both fixed references, which are located in a coverage area, as well as a mobile reference carried by a search team. The invention also discloses techniques to provide information appropriate to guide a search team to an unknown positioned transmitter that is located within a building or structure. The invention discloses techniques to train a central computing unit, by using actuarial data, so that multi-path errors resulting from fixed or mobile obstacles may be reduced.
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公开(公告)号：US5717406A
公开(公告)日：1998-02-10
申请号：US487522
申请日：1995-06-07
CPC分类号： H04W64/00 , G01S1/022 , G01S1/026 , G01S5/0081 , G01S5/02 , G01S5/021 , G01S5/0252 , G01S5/14 , G01S5/145 , G01S5/0215
摘要： The invention discloses several computation and control techniques which use historic information as well as other cues in order to enhance the accuracy of a radio position fix. These computational techniques include neural networks, mapped grid coefficients as input to a set of simultaneous or differential equations, and table lookup of correction coefficients for known low accuracy positions. The invention further discloses techniques for receiver array synchronization so that all system elements in a particular coverage area obtain a time reference appropriate for time of flight radio location measurements. The invention further teaches techniques to enhance the accuracy of a position fix by use of both fixed references, which are located in a coverage area, as well as a mobile reference carried by a search team. The invention also discloses techniques to provide information appropriate to guide a search team to an unknown positioned transmitter that is located within a building or structure. The invention discloses techniques to train a central computing unit, by using actuarial data, so that multi-path errors resulting from fixed or mobile obstacles may be reduced.
摘要翻译： 本发明公开了使用历史信息以及其他线索的几种计算和控制技术，以便提高无线电定位的准确度。 这些计算技术包括神经网络，映射网格系数作为一组同时或微分方程的输入，以及用于已知低精度位置的校正系数的表查找。 本发明还公开了用于接收机阵列同步的技术，使得特定覆盖区域中的所有系统元件获得适合于飞行时间无线电位置测量的时间参考。 本发明进一步教导了通过使用位于覆盖区域中的固定参考以及由搜索团队携带的移动参考来提高定位精度的技术。 本发明还公开了提供适合于将搜索团队引导到位于建筑物或结构内的未知定位的发射机的信息的技术。 本发明公开了通过使用精算数据来训练中央计算单元的技术，从而可以减少由固定或移动障碍物引起的多径错误。
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公开(公告)号：US5652592A
公开(公告)日：1997-07-29
申请号：US470739
申请日：1995-06-06
CPC分类号： G01C5/06 , G01S5/0036 , G01S5/06
摘要： An enhanced system for calculating the Z-Axis, or relative height or altitude, of a radio beacon. The present invention uses a barometric pressure sensing device co-located with the radio emitter to transmit data representing relative altitude. To further enhance the Z-Axis determination, one or several barometric sensors, located at known heights, are positioned around the city to provide real time barometric data. This real time data is used to form a differential correction factor which is compared to the to the time varying barometric sensor co-located with the radio emitter, thereby yielding Z-Axis accuracies of up to one (1) foot. Since the altitude essentially becomes a "known", this information can also be used in the least squares fit algorithm to enhance the X and Y determination as well. As an alternative to differential readings from "known" altitude barometric sensors, the X,Y position of the radio emitter itself, or a check-in by a user, can be used to determine times when the radio emitter is at a known altitude thus providing occasional positions for "self" correction. Further, a mobile barometric reference, with a known Z-axis, can be purposely brought in proximity of the unknown altitude transmitter by, for example, a search team to provide differential information. Lastly, additional radio techniques are taught to assist a mobile search team.
摘要翻译： 用于计算无线电信标的Z轴或相对高度或高度的增强系统。 本发明使用与无线电发射器共同位置的气压感测装置来发送表示相对高度的数据。 为了进一步增强Z轴测定，位于已知高度的一个或几个气压传感器位于城市周围，以提供实时气压数据。 该实时数据用于形成与与无线电发射器共位的时变气压传感器进行比较的差分校正因子，从而产生高达一（1）英尺的Z轴精度。 由于高度基本上变成“已知”，所以该信息也可以用于最小二乘拟合算法中以增强X和Y的确定。 作为来自“已知”高度气压传感器的差分读数的替代方案，无线电发射器本身的X，Y位置或用户登记可以用于确定无线电发射器处于已知高度的时间 为“自我”纠正提供偶尔的职位。 此外，具有已知Z轴的移动气压参考可以被例如由搜索团队有目的地带到未知高度传感器附近以提供差分信息。 最后，教授额外的无线电技术来协助移动搜索团队。
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公开(公告)号：US6084547A
公开(公告)日：2000-07-04
申请号：US276729
申请日：1999-03-26
CPC分类号： H04W64/00 , G01S1/022 , G01S1/026 , G01S5/0081 , G01S5/02 , G01S5/021 , G01S5/0252 , G01S5/14 , G01S5/145 , G01S5/0215
摘要： The invention discloses several computation and control techniques which use historic information as well as other cues in order to enhance the accuracy of a radio position fix. These computational techniques include neural networks, mapped grid coefficients as input to a set of simultaneous or differential equations,and table lookup of correction coefficients for known low accuracy positions. The invention further discloses techniques for receiver array synchronization so that all system elements in a particular coverage area obtain a time reference appropriate for time of flight radio location measurements. The invention further teaches techniques to enhance the accuracy of a position fix by use of both fixed references, which are located in a coverage area, as well as a mobile reference carried by a search team. The invention also discloses techniques to provide information appropriate to guide a search team to an unknown positioned transmitter that is located within a building or structure. The invention discloses techniques to train a central computing unit, by using actuarial data, so that multi-path errors resulting from fixed or mobile obstacles may be reduced.
摘要翻译： 本发明公开了使用历史信息以及其他线索的几种计算和控制技术，以便提高无线电定位的准确度。 这些计算技术包括神经网络，映射网格系数作为一组同时或微分方程的输入，以及用于已知低精度位置的校正系数的表查找。 本发明还公开了用于接收机阵列同步的技术，使得特定覆盖区域中的所有系统元件获得适合于飞行时间无线电位置测量的时间参考。 本发明进一步教导了通过使用位于覆盖区域中的固定参考以及由搜索团队携带的移动参考来提高定位精度的技术。 本发明还公开了提供适合于将搜索团队引导到位于建筑物或结构内的未知定位的发射机的信息的技术。 本发明公开了通过使用精算数据来训练中央计算单元的技术，从而可以减少由固定或移动障碍物引起的多径错误。
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公开(公告)号：US5920589A
公开(公告)日：1999-07-06
申请号：US559913
申请日：1995-11-17
IPC分类号： H04B1/707
CPC分类号： H04B1/70752 , H04B1/707 , H04B1/70755 , H04B1/70775 , H04B1/708 , H04B1/7097 , H04B1/7101
摘要： A direct sequence spread spectrum (DSSS) DSP implementation technique utilizing a unique combination of multiple filters, transforms, despreading algorithm and spectral compression, all in a single coefficient set, providing a highly efficient system requiring relatively nominal computational hardware and software requirements. Reallocatable computational resources allow for frequency uncertainty in the transmitter, without the typical excessive noise bandwidth penalties. The present system further contemplates a unique energy detection algorithm for discerning spread spectrum while in the search mode, utilizing several discrete sampling data sets to increase signal strength, reducing noise, while changing the relative phase of the received chipping code with respect to the received signal. The spectral compression of the spreading sequence is achieved by representing the PRC as an array of two, complimenting fractional coefficients. The PRC code is filtered to achieve the required spectral compression characteristics, resulting in minimal despreading loss, while providing interference rejection of CW signals greater than 1.5 MHz from the center IF frequency.
摘要翻译： 直接序列扩频（DSSS）DSP实现技术利用多个滤波器，变换，解扩算法和频谱压缩的独特组合，全部在单个系数集中，提供需要相对标称计算硬件和软件要求的高效系统。 可重新定位的计算资源允许发射机中的频率不确定性，而不会产生典型的过多的噪声带宽损失。 本系统进一步考虑了一种独特的能量检测算法，用于在搜索模式下识别扩展频谱，利用若干离散采样数据集增加信号强度，降低噪声，同时改变接收到的切片码相对于接收信号的相对相位 。 扩展序列的频谱压缩通过将PRC表示为两个相加的分数系数的阵列来实现。 对PRC码进行滤波以实现所需的频谱压缩特性，从而产生最小的去扩展损耗，同时从中心IF频率提供大于1.5MHz的CW信号的干扰抑制。
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公开(公告)号：US5859869A
公开(公告)日：1999-01-12
申请号：US559914
申请日：1995-11-17
CPC分类号： H04B1/707 , H04L27/2035 , H04B2001/0491
摘要： An improvement in spread spectrum modulator systems, and more particularly further improvements in spread spectrum BPSK, or Binary Phase Shift Keying, Modulation systems, the present invention contemplating the utilization of an exclusive OR logic gate to replace an RF mixer stage in the SS transmitter, thereby providing enhanced gain at a lower energy consumption, with lesser cost and suppressed carrier output when compared to prior systems, as well as compatibility with CMOS low power logic modulation drive circuitry. The present system teaches a new, superior, and less costly BPSK transmitter than contemplated by the prior art, providing a less complicated system while outputting increased gain over prior art modulators.
摘要翻译： 扩展频谱调制器系统的改进，以及扩展频谱BPSK或二进制相移键控，调制系统中的更具体的进一步改进，本发明考虑利用异或逻辑门来替代SS发射机中的RF混频器级， 从而在较低的能耗下提供增强的增益，与现有的系统相比，具有更低的成本和抑制的载波输出，以及与CMOS低功率逻辑调制驱动电路的兼容性。 本系统教导了比现有技术预期的新的，优越的和较便宜的BPSK发射机，提供较不复杂的系统，同时输出比现有技术的调制器增加的增益。
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8.发明授权Method, apparatus, and system for detecting hot socket deterioration in an electrical meter connection 有权用于检测电表连接中的热插座劣化的方法，装置和系统公开(公告)号：US07513683B2
公开(公告)日：2009-04-07
申请号：US11697590
申请日：2007-04-06
IPC分类号： G01K3/00
CPC分类号： G01R31/04 , G01R22/063
摘要： A system for detecting, at a remote location, a deterioration in an electrical connection, such as an electrical meter socket connection, includes at least one deterioration sensing device that includes an apparatus for detecting, at a remote location, a deterioration in an electrical connection; at least one fixed or portable receiving communication device, each configured to receive temperature information from the at least one deterioration sensing device and to transmit the temperature information via a communication network; and a back end connected to the communication network and configured to receive temperature information from the at least one fixed or portable sensing communication device. Upon exceeding a predetermined condition, the back-end may forward an alarm warning to a utility.
摘要翻译： 用于在远程位置检测诸如电表插座连接的电连接的恶化的系统包括至少一个劣化感测装置，其包括用于在远程位置检测电连接的劣化的装置 ; 至少一个固定或便携式接收通信设备，每个被配置为从所述至少一个劣化感测设备接收温度信息并且经由通信网络发送所述温度信息; 以及连接到所述通信网络并被配置为从所述至少一个固定或便携式感测通信设备接收温度信息的后端。 当超过预定条件时，后端可以向公用设施转发报警警告。
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公开(公告)号：US20080180088A1
公开(公告)日：2008-07-31
申请号：US11668180
申请日：2007-01-29
IPC分类号： G01R11/24
CPC分类号： G01R22/066
摘要： An electronic meter tamper detection system and method for sensing the removal of an electricity meter from a meter socket and generating a tamper signal when such removal is detected. The tamper detection circuit includes a control unit having an energy storage device that is charged during normal operation of the electricity meter. When power is interrupted to the electricity meter, the control unit applies a charging voltage to a voltage regulating device within the electricity meter. The voltage regulating device can be charged only when the electricity meter is installed within the meter socket. After applying the charging voltage to the voltage regulating device, the control unit senses whether the voltage regulating device has been charged. If the voltage regulating device has not been charged, the control unit indicates that the meter has been removed from the meter socket.
摘要翻译： 一种电子表篡改检测系统和方法，用于感测从仪表插座中移除电表并在检测到这种移除时产生篡改信号。 篡改检测电路包括具有在电表的正常操作期间被充电的能量存储装置的控制单元。 当电力中断时，控制单元向电表内的电压调节装置施加充电电压。 只有当电表安装在仪表插座内时，才能对电压调节装置进行充电。 在向电压调节装置施加充电电压之后，控制单元感测电压调节装置是否已经充电。 如果电压调节装置未充电，则控制单元指示仪表已从仪表插座中取出。
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公开(公告)号：US5987058A
公开(公告)日：1999-11-16
申请号：US487523
申请日：1995-06-07
IPC分类号： G08B25/10 , H04B1/707 , H04B1/7075 , H04B1/7077 , H04B1/708 , H04B1/69
CPC分类号： H04B1/708 , G08B25/10 , H04B1/7075 , H04B1/70757 , H04B1/7077 , H04B1/70756 , H04B2201/70715
摘要： A wireless alarm system using spread spectrum transmitters, fast frequency shift keying, spread spectrum receivers and computer with a display. The spread spectrum transmitter includes an oscillator coupled to a microprocessor with chip code generation means, preamble register, address register and data register. The spread spectrum receiver acquires synchronization of the spread spectrum signal using a microprocessor coupled to the quieting, signal strength or baseband output of the receiver, with a two step algorithm. The steps comprise achieving a coarse lock and a fine lock to the spread spectrum signal.
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