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公开(公告)号：US5483817A
公开(公告)日：1996-01-16
申请号：US257263
申请日：1994-06-08
申请人： Pascal Renard , Michel Burri
发明人： Pascal Renard , Michel Burri
CPC分类号： G01P21/02
摘要： A short circuit detector circuit (10) for detecting when a sensor (2), such as a tachometer sensor in automotive applications, is operating normally and when the sensor is short circuited is disclosed. The detector circuit (10) comprises a reference signal input (16) for receiving a reference signal, and a closed loop (22, 24, 12, 14, 26, 34, 32) having a predetermined loop gain (K). The closed loop has a first input coupled to the reference signal input, a first output (12) coupled to drive the sensor with a signal dependent on the input signal and the predetermined loop gain, a second input (14) for receiving a feed back signal from the sensor and a second output (36) coupled to the first input for providing an output response signal dependent on the operation of the sensor. The value of the predetermined loop gain is selected so that the output response signal is an undamped oscillation for normal sensor operation. The detector circuit (10) further comprises means (4, 50, 52, 54, 56,. 58, 60) for analysing the output response signal and for detecting normal sensor operation when the output response signal is an undamped oscillation and for detecting short circuit sensor operation when the output response signal is a damped oscillation.
摘要翻译： 公开了一种短路检测器电路（10），用于检测汽车应用中诸如转速计传感器之类的传感器（2）何时正常运行以及当传感器短路时。 检测器电路（10）包括用于接收参考信号的参考信号输入（16）和具有预定环路增益（K）的闭环（22,24,22,14,26,34,32）。 所述闭环具有耦合到所述参考信号输入端的第一输入端，耦合到驱动所述传感器的第一输出端，所述第一输入端具有取决于所述输入信号和所述预定环路增益的信号;第二输入端（14），用于接收反馈 来自传感器的信号和耦合到第一输入端的第二输出端（36），用于根据传感器的操作提供输出响应信号。 选择预定环路增益的值，使得输出响应信号是正常传感器操作的无阻尼振荡。 检测器电路（10）还包括用于分析输出响应信号的装置（4,50,52,54,56,58,60），并且当输出响应信号是无阻尼振荡并用于检测短路时，检测正常的传感器操作 当输出响应信号为阻尼振荡时，电路传感器工作。
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公开(公告)号：US07286042B2
公开(公告)日：2007-10-23
申请号：US10481111
申请日：2002-06-03
申请人： Eric Perraud , Bruno Baylac , Michel Burri
发明人： Eric Perraud , Bruno Baylac , Michel Burri
IPC分类号： H04Q5/22
CPC分类号： B60C23/0433 , B60C23/0413 , B60C23/0461
摘要： A communication device comprising an internal power source, first and second receiver elements for receiving signals transmitted from the base station, and a processor selectively responsive to a modulation of the received signal to generate a data signal for transmission to the base station. The first receiver element has lower power consumption than the second receiver element does when energised. At least during a standby state of the device, the first receiver element is activated to detect the presence of a received signal, the second receiver element and the processing means being de-energised. The first receiver element is responsive to detection of a received signal to trigger an active state in which the second receiver element is activated to respond selectively to the frequency of the signal received to actuate the processor. The invention is applicable to vehicle access control systems, and tire pressure monitoring systems.
摘要翻译： 一种通信设备，包括内部电源，用于接收从基站发送的信号的第一和第二接收器元件，以及选择性地响应于接收信号的调制以产生用于传输到基站的数据信号的处理器。 第一接收器元件在通电时具有比第二接收器元件更低的功率消耗。 至少在设备的待机状态期间，第一接收器元件被激活以检测接收到的信号的存在，第二接收器元件和处理装置被断电。 第一接收器元件响应于接收到的信号的检测以触发激活状态，其中第二接收器元件被激活以选择性响应接收到的信号的频率来致动处理器。 本发明适用于车辆门禁系统和轮胎压力监测系统。
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公开(公告)号：US5945958A
公开(公告)日：1999-08-31
申请号：US891962
申请日：1997-07-14
申请人： Hans Staufer , Michel Burri
发明人： Hans Staufer , Michel Burri
CPC分类号： H01Q7/005
摘要： An improved loop antenna (10) comprises first (12) and second (16) conductive loops. Each of the first and second conductive loops has a discontinuity (14, 18). The first and second conductive loops (12, 16) are arranged substantially concentrically to form a capacitive coupling such that the tuned frequency of the loop antenna (10) has improved protection from external capacitance effects.
摘要翻译： 改进的环形天线（10）包括第一（12）和第二（16）导电环路。 第一和第二导电回路中的每一个具有不连续（14,18）。 第一和第二导电回路（12,16）基本上同心地布置以形成电容耦合，使得环形天线（10）的调谐频率具有改进的防止外部电容效应的保护。
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公开(公告)号：US5012436A
公开(公告)日：1991-04-30
申请号：US417416
申请日：1989-10-05
申请人： Michel Burri
发明人： Michel Burri
CPC分类号： G01D3/02
摘要： A sensor arrangement, particularly suitable for pressure sensors is disclosed, in which differential output signals from a pressure sensor are switched between two amplifiers and fed to a microcomputer where they are stored as two pairs of signals in digital form. The two pairs of signals are combined to cancel amplifier offset voltages.
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公开(公告)号：US5392418A
公开(公告)日：1995-02-21
申请号：US837189
申请日：1992-02-14
申请人： Michel Burri
发明人： Michel Burri
摘要： A non-volatile memory cell including a pn diode and a circuit for sensing the logic state of the pn diode such that a logic one state indicates that the diode is in its normal state, while the other logic state is created by fusing the diode for creating a short circuit. The circuit for sensing the logic state of the diode includes a circuit for developing a sense voltage across the diode, a first comparator for comparing the sense voltage with a first reference voltage greater than the normal junction voltage, a second comparator for comparing the sense voltage with a second reference voltage less than the normal junction voltage but greater than the fused junction voltage and a circuit responsive to the outputs of the first and second comparators to provide an output signal which has a first value if the sense voltage is between the first and second reference voltages and a second value if the sense voltage is not between the first and second reference voltages.
摘要翻译： 一种包括pn二极管和用于感测pn二极管的逻辑状态的电路的非易失性存储单元，使得逻辑1状态指示二极管处于其正常状态，而另一个逻辑状态是通过将二极管熔接 造成短路。 用于感测二极管的逻辑状态的电路包括用于开发二极管两端的感测电压的电路，用于将感测电压与大于正常结电压的第一参考电压进行比较的第一比较器，用于比较感测电压 具有小于正常结电压但大于熔丝结电压的第二参考电压，以及响应于第一和第二比较器的输出的电路，以提供如果感测电压在第一和第二比较器之间具有第一值的输出信号 第二参考电压和第二值，如果感测电压不在第一和第二参考电压之间。
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公开(公告)号：US5206571A
公开(公告)日：1993-04-27
申请号：US695078
申请日：1991-05-03
申请人： Michel Burri
发明人： Michel Burri
摘要： A driver for a stepper motor including means (Q45, 45, 47, 402) for sampling the current in a motor winding (43) at an instant determined by means (401, 400)for generating a predetermined delay following winding commutation. The sample is compared with winding current by a comparator (403) the output of which is stored at a subsequent instant in a flip-flop (416) to provide an output (42). Current generated within the windings due to rotor motion provide a difference in output when the motor is running or blocked. The invention provides a solution to the problem of motion detection of a stepper motor without recourse to a positional sensor.
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公开(公告)号：US5193177A
公开(公告)日：1993-03-09
申请号：US921426
申请日：1992-07-31
申请人： Michel Burri
发明人： Michel Burri
CPC分类号： G06F11/0763 , G06F11/0745 , G06F11/079
摘要： A microcomputer interface arrangement includes a microcomputer having I/O ports coupled to individual interface units. A fault detection circuit detects a fault in an interface unit, interrupts the microcomputer and inverts the input state of the faulty unit without affecting the output states so that the faulty unit can be identified by the microcomputer by reading inputs of the interface units.
摘要翻译： 微型计算机接口装置包括具有耦合到各个接口单元的I / O端口的微型计算机。 故障检测电路检测接口单元中的故障，中断微机并将故障单元的输入状态反转，而不会影响输出状态，从而可以通过读取接口单元的输入由微型计算机识别故障单元。
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公开(公告)号：US06992568B2
公开(公告)日：2006-01-31
申请号：US10228518
申请日：2002-08-27
申请人： Eric Perraud , Michel Burri
发明人： Eric Perraud , Michel Burri
IPC分类号： H04Q5/22
CPC分类号： G06K7/0008 , G06K19/0723 , G07C9/00309 , G07C2009/00365 , G07C2009/00396 , G07C2009/00412 , G07C2009/00555 , G07C2009/00793 , G07C2209/61
摘要： A method of passive response communication, especially for an access control system, in which a first transponder (2) transmits an interrogation signal to a remote second transponder (3), which responds by transmitting data back to the first transponder (2), the two transponders each comprising a transmitter and a receiver, and a communication signal exchanged between said transponders (2, 3) in at least one direction including a plurality of anti-relay-attack pulses (13, 14). At least one distinguishing pulse (14) selected among the anti-relay-attack pulses has a distinctive shape and the receiver of said communication signal is selectively responsive to the shapes of said plurality of pulses (13, 14). Interception of the transmitted signal in a relay attack using digital transceivers will not relay the distinctive shape and the response of the second transponder is inhibited.
摘要翻译： 一种被动响应通信的方法，特别是对于接入控制系统，其中第一应答器（2）向第二应答器（3）发送询问信号，所述远程第二应答器（3）通过将数据发送回第一应答器（2）进行响应， 每个包括发射器和接收器的两个转发器以及在包括多个反中继攻击脉冲（13,14）的至少一个方向上在所述应答器（2,3）之间交换的通信信号。 在抗中继攻击脉冲中选择的至少一个区分脉冲（14）具有独特的形状，并且所述通信信号的接收器选择性地响应于所述多个脉冲（13,14）的形状。 在使用数字收发器的中继攻击中拦截发射信号不会中继独特的形状，并且抑制第二应答器的响应。
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公开(公告)号：US20050052286A1
公开(公告)日：2005-03-10
申请号：US10481111
申请日：2002-06-03
申请人： Eric Perraud , Bruno Baylac , Michel Burri
发明人： Eric Perraud , Bruno Baylac , Michel Burri
CPC分类号： B60C23/0433 , B60C23/0413 , B60C23/0461
摘要： A communication device comprising an internal power source, receiver means for receiving signals transmitted from the base station, and processing means selectively responsive to an interrogation signl received from a base station to generte a data signal fro transmission to the base station. The receiver means comprises a first receiver element and a second receiver element, the first receiver element having lower power consumption than the second receiver element does when energised. At least during a standby state of the device, the internal power source energises the first receiver element so as to detect the presence of a entergised from the internal power source. The first receiver element is responsive to detection of a received signal to trigger an active state of oepration of the communication device in which the internal power source energises the second receiver element so that the second receiver element is selectively responsive to a characteristice of the signal received to actuate the processing means. The invention is applicable to access control systems, especially to cehicle access control systems, and also to tyre pressure monitoring systems.
摘要翻译： 一种通信设备，包括内部电源，用于接收从基站发送的信号的接收机装置，以及选择性地响应于从基站接收的询问符号的处理装置，以发送数据信号以传输到基站。 接收器装置包括第一接收器元件和第二接收器元件，第一接收器元件在通电时具有比第二接收器元件更低的功率消耗。 至少在设备的待机状态期间，内部电源激励第一接收器元件，以便检测从内部电源收敛的存在。 第一接收器元件响应于接收到的信号的检测以触发通信设备的有效状态，其中内部电源激励第二接收器元件，使得第二接收器元件选择性地响应于接收的信号的特性 致动处理装置。 本发明适用于门禁控制系统，特别适用于车辆门禁系统以及轮胎压力监测系统。
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公开(公告)号：US06959014B2
公开(公告)日：2005-10-25
申请号：US09773806
申请日：2001-02-01
CPC分类号： H04L7/044
摘要： Embodiments of the present invention related generally to communication systems. One embodiment contemplates a method for operating a communication bus where the method includes detecting a start of frame symbol on the communication bus; determining a length of the start of frame symbol; detecting a start of a synchronization field on the communication bus; determining a length of an adjusted synchronization field; determining if the length of the adjusted synchronization field is less than the length of the start of frame symbol; and if the length of the adjusted synchronization field is less than the length of the start of frame symbol, concluding that the start of frame symbol is valid and concluding that the synchronization field is valid. Embodiments of the invention may be used, for example, with the Local Interconnect Network (LIN) protocol.
摘要翻译： 本发明的实施例一般涉及通信系统。 一个实施例考虑了一种用于操作通信总线的方法，其中该方法包括检测通信总线上的帧符号的开始; 确定帧符号开始的长度; 检测通信总线上的同步字段的开始; 确定经调整的同步字段的长度; 确定所调整的同步字段的长度是否小于帧符号开始的长度; 并且如果调整的同步字段的长度小于帧符号开始的长度，则认为帧符号的开始是有效的，并得出同步字段有效的结论。 本发明的实施例可以用于例如本地互连网络（LIN）协议。
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