| Patents for G01R 23 - Arrangements for measuring frequencies; Arrangements for analysing frequency spectra (7,503) |
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| 03/05/2015 | US20150066410 Occupancy measurement and triggering in frequency domain bitmaps |
| 03/05/2015 | US20150061640 Method and Device for Sensorless Control of a Separately Excited Synchronous Machine |
| 03/05/2015 | US20150061639 Dead-Time Selection In Power Converters |
| 03/03/2015 | US8972215 Method and system for determining parameters of sinusoidal signals |
| 03/03/2015 | US8970277 Multiplexed oscillators |
| 03/03/2015 | US8970255 Frequency detection apparatus with internal output voltage which changes along with input signal frequency |
| 03/03/2015 | US8970254 Systems and methods for frequency detection |
| 02/26/2015 | US20150058646 Method for controlling dynamic voltage frequency scaling in electronic device and apparatus supporting the same |
| 02/26/2015 | US20150057980 Structures and methods for rf de-embedding |
| 02/26/2015 | US20150054491 System and method for detecting a fundamental frequency of an electric power system |
| 02/26/2015 | US20150054490 Electrical combiner box with improved functionality |
| 02/26/2015 | DE102013108511A1 Ladungsfluss-Frequenz-Wandler mit Fehler-Indikator Flow of charge-to-frequency converter with error indicator |
| 02/24/2015 | US8964823 Frequency selective measuring device and frequency selective measuring method |
| 02/19/2015 | WO2015022451A1 Method and system and computer program for measuring alternating-current system quantities |
| 02/19/2015 | US20150051858 Pulse frequency measurement device and method and control system |
| 02/19/2015 | DE102013105019A1 Füllstandsmessung mit verbesserter Entfernungsbestimmmung Level measurement with improved Entfernungsbestimmmung |
| 02/17/2015 | US8957666 Anti-islanding protection in three-phase converters using grid synchronization small-signal stability |
| 02/12/2015 | US20150042407 Method for detecting frequency offset of oscillator and associated circuit |
| 02/12/2015 | US20150042307 Method and apparatus for tone tracing and tagging using mobile computer device |
| 02/12/2015 | DE102014010464A1 Messverfahren und Messvorrichtung Measurement methods and apparatus |
| 02/12/2015 | DE102013108510A1 Ladungsfluss-Frequenz-Wandler mit unterschiedlicher Ladungsfluss-Richtung Flow of charge-frequency converter with different charge flow direction |
| 02/11/2015 | CN204154811U 无刷直流电机反电动势三次谐波检测电路 Brushless DC motor back-EMF third harmonic detection circuit |
| 02/11/2015 | CN204154788U 一种气动执行机构测试装置 One kind of pneumatic actuator test device |
| 02/11/2015 | CN104345213A 基于信号特性的实时分析的自动化信号捕捉和定位的设备 Real-time analysis of the signal characteristics of automated signal capture and location-based devices |
| 02/11/2015 | CN104344875A 一种用于液体流量检定的脉冲计时计数装置及方法 A timing pulse counting device and method for liquid flow test |
| 02/11/2015 | CN102937667B 一种无线智能可控的用于插座的计量设备 A wireless smart metering devices for controlled socket |
| 02/11/2015 | CN102707142B 控制对象的频谱分析方法和装置 Method and apparatus for spectral analysis of the control object |
| 02/11/2015 | CN102565532B 过程控制系统信号频率谱分析方法与装置 Process control system signal frequency spectrum analysis method and apparatus |
| 02/10/2015 | US8955122 Method and apparatus for detecting malware infection |
| 02/10/2015 | US8954286 Method and device for measuring electromagnetic wave |
| 02/05/2015 | DE102013012811A1 Anordnung und Verfahren zur Identifikation und Korrektur der nichtlinearen Eigenschaften elektromagnetischer Wandler Apparatus and method for the identification and correction of the non-linear characteristics of electromagnetic transducer |
| 02/04/2015 | EP2833569A1 Device for automated signal capture and location based on real-time analysis of signal characteristics |
| 02/04/2015 | EP2831603A1 On-die all-digital delay measurement circuit |
| 02/04/2015 | CN104330628A 无刷直流电机反电动势三次谐波检测电路 Brushless DC motor back-EMF third harmonic detection circuit |
| 02/04/2015 | CN104330627A 一种基于有源注入电流的电网谐振自动检测方法 An active grid injection current automatic detection method based on resonance |
| 02/04/2015 | CN104330626A 一种电网谐波监测仪 One kind of harmonic Monitor |
| 02/04/2015 | CN104330625A 一种基于Labview和第三方驱动程序的自动化无线电环境测试平台 Based on Labview and third-party drivers test automation platform radio environment |
| 02/04/2015 | CN104330624A 一种非平稳信号紧密间隔频率成分的检测方法 Frequency components of a detection method for non-stationary signals closely spaced |
| 02/04/2015 | CN104330623A 电力系统中正弦波信号的参数测量方法及系统 Parameter Measurement Method and system power system sine wave signal |
| 02/04/2015 | CN104330622A 电力系统中正弦波信号的频率测量方法及系统 Frequency Measurement Method and system for power system sine wave signal |
| 02/04/2015 | CN104330615A 基于fft算法的避雷器和变压器的多相同测装置及其方法 Based on many of the same measuring apparatus and method fft algorithm arrester and transformer |
| 02/04/2015 | CN102928662B 信号频率稳定度测量方法和装置 Signal frequency stability measurement method and apparatus |
| 02/04/2015 | CN102914695B 具有实时延时补偿功能的谐波检测方法 Harmonic detection method with real-time delay compensation function |
| 02/04/2015 | CN102901871B 信号频率检测系统及方法 Signal frequency detection system and method |
| 02/04/2015 | CN102809686B 扫频源瞬时频率检测方法与系统 Sweep instantaneous frequency detection method and system |
| 02/03/2015 | US8947167 Reference-less frequency detector |
| 02/03/2015 | US8947071 Noise reduction system and method |
| 01/28/2015 | CN104316764A 一种频谱分析仪的控制与测量并行处理方法 Control and measurement of a spectrum analyzer parallel processing |
| 01/28/2015 | CN104316763A 一种光伏逆变器电流谐波检测系统及方法 An inverter current harmonic detection system and method for photovoltaic |
| 01/28/2015 | CN104316762A 一种配电变压器动态负载谐波监测方法及装置 An electrical distribution transformer harmonic dynamic load monitoring method and apparatus |
| 01/28/2015 | CN104316761A 一种声表面波谐振器型无线传感器传感回波频率的测试电路 A surface acoustic wave resonator frequency wireless sensor sensing the echo test circuit |
| 01/28/2015 | CN104316760A 一种应用于微波频率计的主频信号判定电路及判定方法 Applied to the microwave frequency counter clocked signal decision circuit and method for determining |
| 01/28/2015 | CN103076495B 基于间接式微机械微波功率传感器的频率检测装置 Indirect detection device based on the frequency of microwave power micromachined sensors |
| 01/28/2015 | CN103033684B 基于固支梁电容式微机械微波功率传感器的频率检测装置 Based on the frequency detection device clamped beam micromachined capacitive microwave power sensors |
| 01/28/2015 | CN102944773B 基于空间变换的电能扰动检测及分类方法 Disturbance detection and classification method based on the spatial transformation of energy |
| 01/28/2015 | CN102809687B 一种交流电频率的数字化测量方法 Digital AC frequency measurement method |
| 01/28/2015 | CN102445683B 初级用户信号感知与定位方法 Novice signal perception and positioning method |
| 01/27/2015 | US8942939 Real-time detection system and the method thereof |
| 01/27/2015 | US8942938 Electromagnetic spectrum aerial surveying |
| 01/22/2015 | DE102013213985A1 Messgerät und Messverfahren zur Detektion einer periodischen Abfolge von Pulsen in einem Signal Measuring device and measuring method for detecting a periodic sequence of pulses in a signal |
| 01/22/2015 | DE102006005595B4 Vorrichtung und Verfahren zur Messung von Störemissionen in Echtzeit Apparatus and method for measuring spurious emissions in real time |
| 01/21/2015 | CN204116456U 一种宽频数字频率计 One kind of broadband digital frequency meter |
| 01/21/2015 | CN204116455U 电力系统变压变频谐波频率表 VVVF power system harmonic frequency table |
| 01/21/2015 | CN204116446U 一种用于高压变频器的电压和频率测量装置 Voltage and frequency measurement device for high-voltage inverter |
| 01/21/2015 | CN104297565A 基于fpga及磁平衡式霍尔传感器的电量数字化转换器 Digitizer-based electricity and magnetic balance fpga Hall sensor |
| 01/21/2015 | CN104297564A 基于fpga及磁平衡式互感器的电量数字化转换器 Fpga based magnetic balance and power transformers digitizer |
| 01/20/2015 | US8937496 Clock monitor |
| 01/15/2015 | WO2015005663A1 Signal measurement diagnosis monitoring system and method therefor, and method and system for applying same to individual device |
| 01/15/2015 | US20150015239 Apparatus and method for real time harmonic spectral analyzer |
| 01/15/2015 | US20150015238 Measurement System Utilizing a Frequency-Dithered Local Oscillator |
| 01/14/2015 | CN204101632U 一种闪光融合临界频率测试系统 One kind of critical flicker fusion frequency test system |
| 01/14/2015 | CN104280647A 一种高压变压器谐振预警方法和装置 A high voltage transformer resonant warning method and apparatus |
| 01/14/2015 | CN104280612A 一种基于单频电流传输特性的分布式谐波源辨识方法 A distributed harmonic source identification method based on single-frequency current transfer characteristics |
| 01/14/2015 | CN104280611A 一种基于随机共振系统的高频信号频谱感知方法 High-frequency signal spectrum sensing method based on stochastic resonance system |
| 01/14/2015 | CN104280610A 一种锁相环机及其检测电网频率的方法 One kind of phase-locked loop machine and grid frequency detection method |
| 01/14/2015 | CN102721864B 高频电弧信号错时采集系统及方法 System and method for high-frequency arc fault signal acquisition time |
| 01/14/2015 | CN102611183B 并网发电系统孤岛检测及保护方法 Grid system islanding detection and protection methods |
| 01/08/2015 | US20150008898 Monitoring an electrical power supply network |
| 01/07/2015 | CN204086394U 一种便携式数字频率计 A portable digital frequency meter |
| 01/07/2015 | CN104269930A 基于pqdif标准的电网污染数据总线型分析系统 Grid-based pollution data analysis pqdif standard bus system |
| 01/07/2015 | CN104267259A 电力谐波测量方法和系统 Power harmonic measurement method and system |
| 01/07/2015 | CN104267258A 一种利用不完全s变换的谐波瞬时功率计算方法 An instantaneous harmonic power calculation methods are not completely s TRANSFORM |
| 01/07/2015 | CN104267257A 基于点频滤波器的信号幅频谱检测方法和系统 Based on point-frequency filter signal amplitude spectrum detection method and system |
| 01/07/2015 | CN104267256A 适用于高基频mesa晶片测试的装置及测试方法 For high mesa baseband chip testing equipment and test methods |
| 01/07/2015 | CN104267238A 一种气动执行机构测试装置 One kind of pneumatic actuator test device |
| 01/07/2015 | CN102918406B 交流电气量测定装置及交流电气量测定方法 AC electrical device and method for determining the amount of measuring the amount of AC electrical |
| 01/07/2015 | CN102841251B 一种微网中电动汽车充电站谐波检测法 A micro network of electric vehicle charging stations harmonic detection method |
| 01/07/2015 | CN101893657B 频率测量装置 Frequency measuring device |
| 12/31/2014 | CN204065239U 配电网pt铁磁谐振故障诊断与消除装置 Pt distribution network fault diagnosis and elimination of ferromagnetic resonance device |
| 12/31/2014 | CN204065238U 一种谐波测试工具 Harmonic testing tools |
| 12/31/2014 | CN204065237U 授时用时基参数测量装置 Timing parameter measurement device with a time base |
| 12/31/2014 | CN104251934A 谐波分析方法和装置以及确定谐波间杂波的方法和装置 Method and apparatus for harmonic analysis method and apparatus for determining harmonics and inter-clutter |
| 12/31/2014 | CN104251932A 一种测量正弦电压信号的方法及其系统 A measuring sinusoidal voltage signal method and system |
| 12/31/2014 | CN102771077B 数字时钟再生器 Digital clock regenerator |
| 12/31/2014 | CN102628893B 一种光子集成微波频率测量系统及方法 One kind of photonic integrated microwave frequency measurement system and method |
| 12/30/2014 | US8924173 Determining harmonics |
| 12/30/2014 | US8922193 Current meter |
| 12/24/2014 | CN204044245U 一种铷原子频标系统信号频率稳定度检测装置 One kind of rubidium atomic frequency standard system signal frequency stability detection device |
| 12/24/2014 | CN204044244U 一种比对装置 Than one kind of device |
| 12/24/2014 | CN104237635A 电力系统的谐波定量测量方法 Quantitative measurement of power system harmonic approach |