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1. 发明授权

US5434555A Thermal dispersion switch with self test circuit 失效
标题翻译：具有自检电路的热分散开关
公开(公告)号：US5434555A
公开(公告)日：1995-07-18
申请号：US61682
申请日：1993-05-17
申请人： Kevin M. Haynes
发明人： Kevin M. Haynes
IPC分类号： G01F1/684 , G01F1/696 , G01F23/24 , G08B29/00
CPC分类号： G01F1/684 , G01F1/696 , G01F23/243 , G01F23/247 , G01F23/248
摘要： A thermal dispersion flow/level switch includes a dual element probe assembly. Each element comprises an RTD sensor. The two RTD's are driven at different currents at a fixed ratio so that one RTD is self heated to establish a temperature differential. When a process product comes in contact with the heated sensor, the thermal differential is diminished. The differential is set to determine presence or absence of a process media and provide a change of contact state responsive thereto. In a flow application under no flow or low flow conditions, the RTDs will stabilize with a sufficient temperature differential which decreases in response to higher flow rates.
摘要翻译：热分散流量/液位开关包括双元件探针组件。每个元件包括RTD传感器。两个RTD以不同的电流以固定比例驱动，使得一个RTD自加热以建立温差。当加工产品与加热传感器接触时，热差异减小。差分被设置为确定处理介质的存在或不存在并且响应于此而提供对接触状态的改变。在没有流动或低流量条件下的流动应用中，RTD将以足够的温差稳定，其随着较高的流速而减小。

2. 发明申请

US20140074303A1 TWO-WIRE TRANSMITTER TERMINAL POWER DIAGNOSTICS 审中-公开
标题翻译：双线发射机终端功率诊断
公开(公告)号：US20140074303A1
公开(公告)日：2014-03-13
申请号：US13608231
申请日：2012-09-10
申请人： Kevin M. Haynes , Eric C. Moore
发明人： Kevin M. Haynes , Eric C. Moore
IPC分类号： G06F1/26
CPC分类号： G05B19/0428 , H04Q9/00
摘要： A loop powered process instrument comprises a signal processing circuit measuring a process variable and developing a measurement signal representing the process variable. A control system, for connection to a power supply using a two-wire process loop, controls current on the loop in accordance with the measurement signal. The control system implements a diagnostic function comprising selectively controlling loop current at first and second select current levels and measuring terminal voltage at each of the first and second select current levels to determine if power supply voltage is at a select voltage level.
摘要翻译：循环供电的过程仪器包括测量过程变量的信号处理电路并开发表示过程变量的测量信号。用于使用两线制过程回路连接到电源的控制系统根据测量信号控制回路上的电流。控制系统实现诊断功能，包括选择性地控制第一和第二选择电流电平下的回路电流，并测量第一和第二选择电流电平中的每一个处的端子电压，以确定电源电压是否处于选择电压电平。

3. 发明授权

US08220584B2 Hybrid level measurement system 有权
标题翻译：混合电平测量系统
公开(公告)号：US08220584B2
公开(公告)日：2012-07-17
申请号：US12454435
申请日：2009-05-18
申请人： Kevin M. Haynes , Christopher P. Turcotte
发明人： Kevin M. Haynes , Christopher P. Turcotte
IPC分类号： G01S15/00
CPC分类号： G01F23/2962
摘要： A measurement instrument comprises a sensor circuit comprising a drive circuit for transmitting a pulse signal at a target of interest and a receive circuit receiving reflected echoes of the pulse signal and developing an analog signal representative of the reflected echoes. An analog processing circuit is operatively coupled to the sensor circuit for receiving the analog signal and comprising a gate for selectively transferring the analog signal to a comparator that compares the gated analog signal to a select threshold level to develop a data signal representative of location of the target of interest. A programmed digital processing circuit is operatively coupled to the sensor circuit and the analog processing circuit and comprises a measurement module to control the drive circuit and evaluate the data signal to determine material location. An echo processing module periodically evaluates a digital representation of the analog signal to determine an expected window time and expected amplitude of a reflected echo representing the target of interest and developing a gate control signal to control the gate based on expected window time and developing the select threshold level based on the expected amplitude.
摘要翻译：一种测量仪器包括传感器电路，该传感器电路包括用于在感兴趣的目标物体上传输脉冲信号的驱动电路和接收脉冲信号的反射回波的接收电路，并且形成表示反射回波的模拟信号。模拟处理电路可操作地耦合到传感器电路，用于接收模拟信号并且包括用于选择性地将模拟信号传送到比较器的门，该比较器将门控模拟信号与选择阈值电平进行比较，以形成表示位置的数据信号目标感兴趣编程数字处理电路可操作地耦合到传感器电路和模拟处理电路，并且包括测量模块以控制驱动电路并评估数据信号以确定材料位置。回波处理模块周期性地评估模拟信号的数字表示，以确定表示感兴趣目标的反射回波的预期窗口时间和期望振幅，并且基于预期窗口时间开发门控制信号以控制门，并且开发选择基于预期幅度的阈值水平。

4. 发明授权

US07874210B2 Ultrasonic sensor assembly and method 有权
标题翻译：超声波传感器组件及方法
公开(公告)号：US07874210B2
公开(公告)日：2011-01-25
申请号：US12290082
申请日：2008-10-27
申请人： Kevin M. Haynes , Paul G. Janitch , James A. Bosserman
发明人： Kevin M. Haynes , Paul G. Janitch , James A. Bosserman
IPC分类号： G01N24/00
CPC分类号： G01F23/2968 , G01F23/2961 , Y10T117/1004
摘要： An ultrasonic point level measurement instrument comprises a measurement circuit and a transducer. The transducer transmits and receives acoustic signals under control of the measurement circuit. An improvement in the transducer comprises a transducer housing including a pair of spaced apart legs to define a gap therebetween. Each leg includes an interior cavity. A pair of crystal assemblies each comprise a crystal mounted to a circuit board. The circuit board includes conduction paths for connection between the crystal and a terminal pad. Each crystal assembly is received in the interior cavity of one of the legs with the circuit board spacing the crystal from walls of the leg. A pair of cables are each connected between the measurement circuit and the terminal pad of one of the crystal assemblies so that the measurement circuit detects presence of a material in the gap.
摘要翻译：超声波点测量仪器包括测量电路和换能器。换能器在测量电路的控制下发送和接收声信号。换能器的改进包括换能器壳体，其包括一对间隔开的腿以在其间限定间隙。每条腿都包括一个内部空腔。一对晶体组件各自包括安装到电路板的晶体。电路板包括用于在晶体和端子焊盘之间连接的导电路径。每个晶体组件被接收在一个腿的内部空腔中，电路板将晶体与腿的壁隔开。一对电缆分别连接在测量电路和一个晶体组件的端子焊盘之间，使得测量电路检测到间隙中的材料的存在。

5. 发明申请

US20090056451A1 Ultrasonic sensor assembly and method 有权
标题翻译：超声波传感器组件及方法
公开(公告)号：US20090056451A1
公开(公告)日：2009-03-05
申请号：US12290082
申请日：2008-10-27
申请人： Kevin M. Haynes , Paul G. Janitch , James A. Bosserman
发明人： Kevin M. Haynes , Paul G. Janitch , James A. Bosserman
IPC分类号： G01H17/00
CPC分类号： G01F23/2968 , G01F23/2961 , Y10T117/1004
摘要： An ultrasonic point level measurement instrument comprises a measurement circuit and a transducer. The transducer transmits and receives acoustic signals under control of the measurement circuit. An improvement in the transducer comprises a transducer housing including a pair of spaced apart legs to define a gap therebetween. Each leg includes an interior cavity. A pair of crystal assemblies each comprise a crystal mounted to a circuit board. The circuit board includes conduction paths for connection between the crystal and a terminal pad. Each crystal assembly is received in the interior cavity of one of the legs with the circuit board spacing the crystal from walls of the leg. A pair of cables are each connected between the measurement circuit and the terminal pad of one of the crystal assemblies so that the measurement circuit detects presence of a material in the gap.
摘要翻译：超声波点测量仪器包括测量电路和换能器。换能器在测量电路的控制下发送和接收声信号。换能器的改进包括换能器壳体，其包括一对间隔开的腿以在其间限定间隙。每条腿都包括一个内部空腔。一对晶体组件各自包括安装到电路板的晶体。电路板包括用于在晶体和端子焊盘之间连接的导电路径。每个晶体组件被接收在一个腿的内部空腔中，电路板将晶体与腿的壁隔开。一对电缆分别连接在测量电路和一个晶体组件的端子焊盘之间，使得测量电路检测到间隙中的材料的存在。

6. 发明授权

US06879282B2 Guided wave radar level transmitter 有权
标题翻译：导波雷达液位变送器
公开(公告)号：US06879282B2
公开(公告)日：2005-04-12
申请号：US10794142
申请日：2004-03-05
申请人： Kevin M. Haynes
发明人： Kevin M. Haynes
IPC分类号： G01F23/284 , G01S7/282 , G01S7/285 , G01S7/40 , G01S13/02 , G01S13/10 , G01S13/88 , G01S13/08
CPC分类号： G01S13/103 , G01F23/284 , G01S7/282 , G01S7/285 , G01S7/4004 , G01S13/0209 , G01S13/88
摘要： A guided wave radar measurement instrument comprises a probe defining a guided wave radar transmission line. A pulse circuit is connected to the probe for generating a very fast stream of pulses on the transmission line and receiving reflected pulses returned on the transmission line. The reflected pulses represent a characteristic of a material being measured. An equivalent time sampling circuit is connected to the pulse circuit operable to sample reflected pulses to build a time multiplied picture of the reflected pulses and comprises a ramp generator circuit generating a saw tooth ramp signal used to selectively delay sampling reflected pulses to build the time multiplied picture. In one aspect of the instrument, the saw tooth ramp signal has a controlled ramp start for each cycle and retrace at an end of the cycle. A processing circuit is connected to the equivalent time sampling circuit for selectively controlling ramp start for each cycle and measuring round trip travel time for a pulse from the pulse circuit.
摘要翻译：导波雷达测量仪器包括定义导波雷达传输线的探头。脉冲电路连接到探头，用于在传输线上产生非常快的脉冲流并接收传输线上返回的反射脉冲。反射脉冲表示被测材料的特性。等效时间采样电路连接到脉冲电路，其可操作以对反射脉冲进行采样以构建反射脉冲的时间相乘图像，并且包括产生锯齿斜坡信号的斜坡发生器电路，用于选择性地延迟采样反射脉冲以构建时间相乘图片。在仪器的一个方面，锯齿斜坡信号具有每个循环的受控斜坡开始，并且在循环结束时回扫。处理电路连接到等效时间采样电路，用于选择性地控制每个周期的斜坡启动并测量来自脉冲电路的脉冲的往返行程时间。

7. 发明授权

US06801157B2 Guided wave radar level transmitter 有权
标题翻译：导波雷达液位变送器
公开(公告)号：US06801157B2
公开(公告)日：2004-10-05
申请号：US10642257
申请日：2003-08-15
申请人： Kevin M. Haynes
发明人： Kevin M. Haynes
IPC分类号： G01S1308
CPC分类号： G01S13/103 , G01F23/284 , G01S7/282 , G01S7/285 , G01S7/4004 , G01S13/0209 , G01S13/88
摘要： A guided wave radar measurement instrument comprises a probe defining a guided wave radar transmission line. A pulse circuit is connected to the probe for generating a very fast stream of pulses on the transmission line and receiving reflected pulses returned on the transmission line. The reflected pulses represent a characteristic of a material being measured. An equivalent time sampling circuit is connected to the pulse circuit operable to sample reflected pulses to build a time multiplied picture of the reflected pulses and comprises a ramp generator circuit generating a saw tooth ramp signal used to selectively delay sampling reflected pulses to build the time multiplied picture. In one aspect of the instrument, the saw tooth ramp signal has a controlled ramp start for each cycle and retrace at an end of the cycle. A processing circuit is connected to the equivalent time sampling circuit for selectively controlling ramp start for each cycle and measuring round trip travel time for a pulse from the pulse circuit.
摘要翻译：导波雷达测量仪器包括定义导波雷达传输线的探头。脉冲电路连接到探头，用于在传输线上产生非常快的脉冲流并接收传输线上返回的反射脉冲。反射脉冲表示被测材料的特性。等效时间采样电路连接到脉冲电路，其可操作以对反射脉冲进行采样以构建反射脉冲的时间相乘图像，并且包括产生锯齿斜坡信号的斜坡发生器电路，用于选择性地延迟采样反射脉冲以构建时间相乘图片。在仪器的一个方面，锯齿斜坡信号具有每个循环的受控斜坡开始，并且在循环结束时回扫。处理电路连接到等效时间采样电路，用于选择性地控制每个周期的斜坡启动并测量来自脉冲电路的脉冲的往返行程时间。

8. 发明申请

US20100288578A1 Hybrid level measurement system 有权
标题翻译：混合电平测量系统
公开(公告)号：US20100288578A1
公开(公告)日：2010-11-18
申请号：US12454435
申请日：2009-05-18
申请人： Kevin M. Haynes , Christopher P. Turcotte
发明人： Kevin M. Haynes , Christopher P. Turcotte
IPC分类号： G01S15/00
CPC分类号： G01F23/2962
摘要： A measurement instrument comprises a sensor circuit comprising a drive circuit for transmitting a pulse signal at a target of interest and a receive circuit receiving reflected echoes of the pulse signal and developing an analog signal representative of the reflected echoes. An analog processing circuit is operatively coupled to the sensor circuit for receiving the analog signal and comprising a gate for selectively transferring the analog signal to a comparator that compares the gated analog signal to a select threshold level to develop a data signal representative of location of the target of interest. A programmed digital processing circuit is operatively coupled to the sensor circuit and the analog processing circuit and comprises a measurement module to control the drive circuit and evaluate the data signal to determine material location. An echo processing module periodically evaluates a digital representation of the analog signal to determine an expected window time and expected amplitude of a reflected echo representing the target of interest and developing a gate control signal to control the gate based on expected window time and developing the select threshold level based on the expected amplitude.
摘要翻译：一种测量仪器包括传感器电路，该传感器电路包括用于在感兴趣的目标物体上传输脉冲信号的驱动电路和接收脉冲信号的反射回波的接收电路，并且形成表示反射回波的模拟信号。模拟处理电路可操作地耦合到传感器电路，用于接收模拟信号并且包括用于选择性地将模拟信号传送到比较器的门，该比较器将门控模拟信号与选择阈值电平进行比较，以形成表示位置的数据信号目标感兴趣编程数字处理电路可操作地耦合到传感器电路和模拟处理电路，并且包括测量模块以控制驱动电路并评估数据信号以确定材料位置。回波处理模块周期性地评估模拟信号的数字表示，以确定表示感兴趣目标的反射回波的预期窗口时间和期望振幅，并且基于预期窗口时间开发门控制信号以控制门，并且开发选择基于预期幅度的阈值水平。

9. 发明授权

US5131271A Ultrasonic level detector 失效
标题翻译：超声波液位探测器
公开(公告)号：US5131271A
公开(公告)日：1992-07-21
申请号：US509136
申请日：1990-04-16
申请人： Kevin M. Haynes , Steven E. Margison
发明人： Kevin M. Haynes , Steven E. Margison
IPC分类号： G01F23/296 , G01S7/52 , G01S13/18 , G01S15/18
CPC分类号： G01F23/2962 , G01S13/18 , G01S15/18 , G01S7/52004 , Y10S367/908
摘要： An ultrasonic level detector includes a transducer for generating and receiving bursts of sonic energy at a surface to locate the position of the surface. In response to receiving a burst of energy reflected from the surface, the transducer generates an electrical signal, which is then supplied to a variable gain amplifier. After amplification, the electrical signal is supplied to a comparator and a peak detector. The comparator generates a timing signal upon the electrical signal exceeding a threshold. A window generator circuit generates a receive window that controls whether the electrical signal is supplied to the comparator and the magnitude of the threshold on the comparator. The peak detector determines the maximum amplitude of the electrical signal, which may be used to vary the amplifier gain and the number of pulses included in an excitation signal which drives the transducer. Upon receipt of the timing signal, a microprocessor determines the distance between the transducer and the detected surface.
摘要翻译：超声波液位检测器包括用于在表面产生和接收声能的突发的换能器，以定位表面的位置。响应于接收到从表面反射的能量脉冲串，换能器产生电信号，然后将其提供给可变增益放大器。放大后，将电信号提供给比较器和峰值检测器。比较器在电信号超过阈值时产生定时信号。窗口发生器电路产生接收窗口，该窗口控制电信号是否被提供给比较器，以及比较器上的阈值的大小。峰值检测器确定电信号的最大幅度，其可以用于改变放大器增益和包括在驱动换能器的激励信号中的脉冲数。在接收到定时信号时，微处理器确定换能器与检测到的表面之间的距离。

10. 发明授权

US08184503B2 Process measurement instrument with target rejection 有权
标题翻译：具有目标排除的过程测量仪器
公开(公告)号：US08184503B2
公开(公告)日：2012-05-22
申请号：US12454444
申请日：2009-05-18
申请人： Christopher P. Turcotte , Kevin M. Haynes
发明人： Christopher P. Turcotte , Kevin M. Haynes
IPC分类号： G01S15/00
CPC分类号： G01F23/2962 , G01S7/292 , G01S7/527 , Y10S367/908
摘要： A process measurement instrument with target rejection comprises a sensor circuit. The sensor circuit comprises a drive circuit for transmitting a pulse signal at a target of interest and a receive circuit receiving reflected echoes of the pulse signal and developing an analog receive signal representative of the reflected echoes. An analog processing circuit receives the analog receive signal and comprises a summer subtracting an analog target rejection signal from the analog receive signal to develop a corrected receive signal. A programmed digital processing circuit is operatively coupled to the analog processing circuit and comprises a memory storing target rejection signal value data representing false target reflections and developing the analog target rejection signal for transfer to the analog processing circuit.
摘要翻译：具有目标抑制的过程测量仪器包括传感器电路。传感器电路包括用于在感兴趣的目标处传送脉冲信号的驱动电路和接收脉冲信号的反射回波的接收电路，并且形成表示反射回波的模拟接收信号。模拟处理电路接收模拟接收信号，并且包括从模拟接收信号减去模拟目标拒绝信号的加法器，以产生校正的接收信号。编程数字处理电路可操作地耦合到模拟处理电路，并且包括存储表示虚假目标反射的目标拒绝信号值数据的存储器，并且开发用于传送到模拟处理电路的模拟目标拒绝信号。

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