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1. 发明申请

US20190084510A1 ANALOG-TO-DIGITAL FAULT DETECTION, ISOLATION, AND MITIGATION FOR A LOW-VOLTAGE COMMUNICATIONS NETWORK 审中-公开
公开(公告)号：US20190084510A1
公开(公告)日：2019-03-21
申请号：US15707115
申请日：2017-09-18
申请人： GM Global Technology Operations LLC
发明人： Xinyu Du , Shengbing Jiang , Dongyi Zhou , David Gumpert , Atul Nagose , Rod Niner , Aaron D. Motyl
IPC分类号： B60R16/03 , B60R21/01
CPC分类号： B60R16/0315 , B60R21/01 , B60R2021/0104 , B60R2021/01156 , B60R2021/01163
摘要： A system includes control modules, a low-voltage communications bus, e.g., a CAN bus of a vehicle, a voltage sensor that measures a bus voltage and outputs 2.5-3.5 VDC high-data and 1.5-2.5 VDC low-data, and a host electronic control unit (ECU). The host ECU detects a recoverable fault using a data pattern in the bus voltage data when the data is outside of a calibrated range, and recalibrates the sensor. Recalibration may be by adjustment to a scaling factor and/or a bias value. Non-recoverable “stuck-at-fault”-type or “out-of-range”-type faults may be detected using the pattern, as may be a ground offset fault. A method includes measuring the bus voltage using the sensor, comparing the output data to a range to detect the fault, and isolating a sensor fault as a recoverable fault using the data pattern when the data is outside of the range. The sensor is then be recalibrated.

2. 发明授权

US07135983B2 Occupant presence detection device 有权
公开(公告)号：US07135983B2
公开(公告)日：2006-11-14
申请号：US10319431
申请日：2002-12-13
申请人： Vladimir Filippov , Kristopher Desrochers , Valeri Stepanov , Otman Adam Basir , Fakhreddine Karray
发明人： Vladimir Filippov , Kristopher Desrochers , Valeri Stepanov , Otman Adam Basir , Fakhreddine Karray
IPC分类号： G08B21/00
CPC分类号： B60R21/01516 , B60N2/002 , B60R21/01532 , B60R2021/01156 , B60R2021/01163 , B60R2021/0117 , G01G19/4142 , H03K2217/96075
摘要： The purpose of this invention is to sense the presence of a seated occupant in a vehicle such as an automobile, plane, train or bus, or in a room or location where it is desirable to detect if seats are occupied. The occupant presence detection device consists of a single seat-mounted electrode, an oscillator circuit, a bridge circuit, a detection circuit and a circuit for processing the detected signals. The oscillator circuit excites the electrode. If an occupant is present on the seat, additional capacitance from the human body is introduced into the bridge via the electrode. This created differences in the voltage and phase of the waveform in each arm of the bridge circuit which are amplified by a differential amplifier. The signal is then converted to a DC voltage that, when above a predetermined threshold, causes the device to outputs a signal that indicates the presence of an occupant. Using a bridge configuration and a differential amplifier allows the circuit to be operated over a wide range of supply voltages. It also reduces the need for high precision components and the need to regulate the amplitude of the waveform produced by the oscillator. The net result is a capacitive occupant sensing device that is less complex and less expensive that previous capacitive occupant sensing devices, yet is tolerant of power supply fluctuations, is able to function over a wide range of operating voltage and still provides failsafe functionality.

3. 发明申请

US20040174649A1 Power supply device having overvoltage preventing function 审中-公开
标题翻译：具有过电压防止功能的电源装置
公开(公告)号：US20040174649A1
公开(公告)日：2004-09-09
申请号：US10784199
申请日：2004-02-24
申请人： DENSO CORPORATION
发明人： Masahiko Ito
IPC分类号： H02M003/18
CPC分类号： B60R21/017 , B60R2021/01156 , H02M3/156
摘要： A power supply device supplies electrical power to an electrical circuit that has to be protected from overvoltage. A protecting switch is disposed in a circuit connecting a power source, such as a battery, to the electrical circuit, such as a circuit for igniting an airbag system mounted on a vehicle. The power source voltage is compared with a reference voltage, and a control signal for turning off the protecting switch is generated when the power source voltage exceeds the reference voltage. The electrical circuit is disconnected from the power source, and thereby the electrical circuit is protected from overvoltage.
摘要翻译：电源装置为必须防止过电压的电路提供电力。保护开关设置在将诸如电池的电源连接到电路的电路中，例如用于点燃安装在车辆上的气囊系统的电路。将电源电压与参考电压进行比较，并且当电源电压超过参考电压时，产生用于关断保护开关的控制信号。电路与电源断开，防止电路过电压。

4. 发明申请

US20030122669A1 Occupant presence detection device 有权
标题翻译：乘客存在检测装置
公开(公告)号：US20030122669A1
公开(公告)日：2003-07-03
申请号：US10319431
申请日：2002-12-13
发明人： Vladimir Filippov , Kristopher Desrochers , Valeri Stepanov , Otman Adam Basir , Fakhreddine Karray
IPC分类号： G08B013/26
CPC分类号： B60R21/01516 , B60N2/002 , B60R21/01532 , B60R2021/01156 , B60R2021/01163 , B60R2021/0117 , G01G19/4142 , H03K2217/96075
摘要： The purpose of this invention is to sense the presence of a seated occupant in a vehicle such as an automobile, plane, train or bus, or in a room or location where it is desirable to detect if seats are occupied. The occupant presence detection device consists of a single seat-mounted electrode, an oscillator circuit, a bridge circuit, a detection circuit and a circuit for processing the detected signals. The oscillator circuit excites the electrode. If an occupant is present on the seat, additional capacitance from the human body is introduced into the bridge via the electrode. This created differences in the voltage and phase of the waveform in each arm of the bridge circuit which are amplified by a differential amplifier. The signal is then converted to a DC voltage that, when above a predetermined threshold, causes the device to outputs a signal that indicates the presence of an occupant. Using a bridge configuration and a differential amplifier allows the circuit to be operated over a wide range of supply voltages. It also reduces the need for high precision components and the need to regulate the amplitude of the waveform produced by the oscillator. The net result is a capacitive occupant sensing device that is less complex and less expensive that previous capacitive occupant sensing devices, yet is tolerant of power supply fluctuations, is able to function over a wide range of operating voltage and still provides failsafe functionality.
摘要翻译：本发明的目的是感测在诸如汽车，飞机，火车或公共汽车之类的车辆中，或者希望检测座椅是否被占用的房间或位置中的就座乘客的存在。乘员存在检测装置由单个座椅安装电极，振荡器电路，桥接电路，检测电路和用于处理检测到的信号的电路组成。振荡器电路激励电极。如果座位上存在乘员，则通过电极将来自人体的附加电容引入桥中。这产生了由差分放大器放大的桥式电路的每个臂中的波形的电压和相位的差异。然后将该信号转换成直流电压，当高于预定阈值时，使该装置输出指示乘员的存在的信号。使用桥接配置和差分放大器可以使电路在宽范围的电源电压下工作。它还减少了对高精度元件的需求，并且需要调节由振荡器产生的波形的幅度。最终的结果是电容乘员感测装置不太复杂和较便宜，因此以前的电容乘员感测装置，但是容忍电源波动，能够在宽范围的工作电压上起作用并且还提供故障安全功能。

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