公开(公告)号：US06407629B1

公开(公告)日：2002-06-18

申请号：US09609554

申请日：2000-06-30

申请人： Michel Burri ,  Christophe Landez

发明人： Michel Burri ,  Christophe Landez

IPC分类号： H03D100

CPC分类号： H03D5/00

摘要： In accordance with an embodiment of the invention there is provided a sample and hold demodulator circuit (200) for use in an automotive immobilizer to recover modulation information from a received modulated carrier signal (VRD). Sample and hold circuitry samples signals to recover the modulation information therein, and control circuitry (214) is coupled to the sample and hold circuitry for controlling operation thereof. The control circuitry includes shift register circuitry (252) for receiving a second received signal having a same frequency as a carrier frequency of the received modulated carrier signal and for producing at its outputs signals (SAMPLE, SAMPLE2, LATCH) for controlling operation of the sample and hold circuitry. The sample and hold demodulator circuit provides a single IC solution, allowing amplitude and phase demodulation to be performed with a single sample and hold circuit.

摘要翻译： 根据本发明的实施例，提供了一种用于汽车防盗器中的采样和保持解调器电路（200），用于从接收到的调制载波信号（VRD）恢复调制信息。 采样和保持电路采样信号以恢复其中的调制信息，并且控制电路（214）耦合到采样和保持电路以控制其操作。 控制电路包括移位寄存器电路（252），用于接收具有与接收的调制载波信号的载波频率相同频率的第二接收信号，并在其输出端产生用于控制样本的操作的信号（SAMPLE，SAMPLE2，LATCH） 并保持电路。 采样和保持解调器电路提供单个IC解决方案，允许使用单个采样和保持电路进行幅度和相位解调。

公开(公告)号：US5508651A

公开(公告)日：1996-04-16

申请号：US312170

申请日：1994-09-26

申请人： Michel Burri

发明人： Michel Burri

IPC分类号： G01D5/244 ,  G01P3/481 ,  H03K17/14 ,  H01J19/82 ,  H01L25/00 ,  H01L35/00

CPC分类号： G01D5/244 ,  G01P3/481

摘要： An automotive sensor arrangement including an automotive sensor coupled via first and second wires to signal sensor evaluation means, a signal conditioning circuit comprising a first gate means connected to provide a bias operating voltage signal on said first wire to the sensor, a second gate means of similar construction to the first gate means and mounted in the same environment and first gate means, the second gate means being coupled to the second wire of the leas means for receive the voltage signal bears a predetermined relationship to the switching point voltage of the second gate means.

摘要翻译： 一种汽车传感器装置，包括经由第一和第二导线耦合到信号传感器评估装置的汽车传感器，信号调节电路，包括连接以在所述第一导线上提供传感器的偏置工作电压信号的第一门装置， 与第一栅极装置相似的结构并且安装在相同的环境和第一栅极装置中，第二栅极装置耦合到雷达装置的第二导线，用于接收电压信号与第二栅极的开关点电压具有预定的关系 手段。

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

IPC分类号： G01R31/02 ,  G01P21/02 ,  G01C17/38 ,  G01C25/00

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。