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1. 发明申请

WO2023287711A1 ULTRASOUND TRANSDUCER WITH DISTRIBUTED CANTILEVERS 审中-公开
公开(公告)号：WO2023287711A1
公开(公告)日：2023-01-19
申请号：PCT/US2022/036700
申请日：2022-07-11
申请人： ROBERT BOSCH GMBH , YEE, Seow Yuen , PETKOV, Vladimir , BOECKER, Matthias , SCHARY, Timo
发明人： YEE, Seow Yuen , PETKOV, Vladimir , BOECKER, Matthias , SCHARY, Timo
IPC分类号： B06B1/06 , G10K11/00 , G10K11/18
摘要： An ultrasound transducer, wherein the ultrasound transducer includes a membrane including a top portion and a bottom portion, wherein the membrane is configured to vibrate and generate an ultrasound in response to voltage applied the transducer, wherein the membrane includes a perimeter including a plurality of sides and a top surface and a bottom surface with one or more feet extending away from the bottom surface; and a support member that attaches to and connects to the membrane and supports the membrane, wherein the support member includes one or more platforms extending to and attaching to the membrane and a substrate, wherein a first end of the platform connects to the membrane and includes a support portion, wherein the support portion away from the platform, wherein the platform includes the one or more piezoelectric layers, wherein the one or more platforms support and surround the membrane.

2. 发明申请

WO2023287710A1 ULTRASOUND TRANSDUCER INCLUDING A COMBINATION OF A BENDING AND PISTON MODE 审中-公开
公开(公告)号：WO2023287710A1
公开(公告)日：2023-01-19
申请号：PCT/US2022/036696
申请日：2022-07-11
申请人： ROBERT BOSCH GMBH , YEE, Seow Yuen , PETKOV, Vladimir , BOECKER, Matthias , SCHATZ, Frank , SCHARY, Timo , WOJCIECHOWSKI, Kenneth
发明人： YEE, Seow Yuen , PETKOV, Vladimir , BOECKER, Matthias , SCHATZ, Frank , SCHARY, Timo , WOJCIECHOWSKI, Kenneth
IPC分类号： G01S7/521 , B06B1/06 , G01S15/931
摘要： An ultrasound transducer of a vehicle system, comprising a membrane configured to vibrate to generate an ultrasound when voltage is applied and further configured to vibrate in an out-of-plane movement, wherein the membrane includes a first piezoelectric film at a center of the membrane, a supporting member including a second piezoelectric film, the supporting member supporting and surrounding the membrane, wherein in response to a translation of motion or actuation from the membrane, the supporting member mode does not move when there is the out-of-plane movement from the membrane.

3. 发明申请

WO2023287714A1 ULTRASOUND TRANSDUCER WITH DISTRIBUTED CANTILEVERS 审中-公开
公开(公告)号：WO2023287714A1
公开(公告)日：2023-01-19
申请号：PCT/US2022/036705
申请日：2022-07-11
申请人： ROBERT BOSCH GMBH , YEE, Seow Yuen , PETKOV, Vladimir , BOECKER, Matthias , SCHARY, Timo , ROEDEL, Reinhold
发明人： YEE, Seow Yuen , PETKOV, Vladimir , BOECKER, Matthias , SCHARY, Timo , ROEDEL, Reinhold
IPC分类号： G01S7/521 , B06B1/06 , G01S15/931
摘要： An ultrasound transducer of a vehicle system includes a support member that attaches to and connects to the bottom portion of a membrane of the ultrasound transducer and supports the membrane, wherein the support member includes one or more cantilevers with a first end attaching to the membrane and a second end attaching to a support portion of the support member that attaches to the substrate, wherein the cantilever extends across and floats above the substrate, wherein the first end of the cantilever includes a stub extending away from a surface of the cantilever, wherein the stub extends away from the surface without contacting the substrate, wherein the one or more cantilevers includes one or more piezoelectric layers on the surface of the cantilever.

4. 发明申请

WO2023287713A1 ULTRASOUND SENSOR ARRAY FOR PARKING ASSIST SYSTEMS 审中-公开
公开(公告)号：WO2023287713A1
公开(公告)日：2023-01-19
申请号：PCT/US2022/036704
申请日：2022-07-11
申请人： ROBERT BOSCH GMBH , BOECKER, Matthias , PETKOV, Vladimir , YEE, Seow Yuen
发明人： BOECKER, Matthias , PETKOV, Vladimir , YEE, Seow Yuen
IPC分类号： G01S7/521 , G01S15/931
摘要： An ultrasound sensor includes a frame, wherein the frame includes an outer perimeter, an inner perimeter, and a midsection, wherein the midsection extends across the inner perimeter. The sensor further includes two or more transducer elements, wherein the two or more transducer elements are located within the inner perimeter, and include one or more membranes that include a bottom portion that includes a first piezoelectric layer and second piezoelectric layer, wherein the two or more transducer elements are each separated from the midsection, wherein the two or more transducer elements are configured to each activate a transmit mode and receive mode, wherein the transmit mode is configured to transmit a signal and the receive mode is configured to receive a signal, wherein a first transducer element activates the transmit mode when a second transducer element does not activate the transmit mode.

5. 发明申请

WO2009038924A2 CANCELLING LOW FREQUENCY ERRORS IN MEMS SYSTEMS 审中-公开
标题翻译：取消MEMS系统中的低频误差
公开(公告)号：WO2009038924A2
公开(公告)日：2009-03-26
申请号：PCT/US2008/073727
申请日：2008-08-20
申请人： ROBERT BOSCH GMBH , LANG, Christoph , PETKOV, Vladimir , GOMEZ, Udo
发明人： LANG, Christoph , PETKOV, Vladimir , GOMEZ, Udo
IPC分类号： G01R27/26
CPC分类号： G01D5/24 , G01D3/036 , G01P15/125 , H01L2224/48091 , H01L2224/48137 , H01L2224/49175 , H01L2924/13091 , H01L2924/00014 , H01L2924/00
摘要： Systems and methods are described below for cancelling low frequency errors in electronic systems including MEMS systems. The systems include a first circuit coupled to one or more switches. One or more bond wires are coupled to the switches and a second circuit. Control signals are coupled to the switches, and the control signals are configured to control coupling of the first circuit to the second circuit via the switch to cancel variable offsets introduced by the bond wire in an output of the first circuit.
摘要翻译：下面描述了用于消除包括MEMS系统的电子系统中的低频误差的系统和方法。该系统包括耦合到一个或多个开关的第一电路。一个或多个接合线耦合到开关和第二电路。控制信号耦合到开关，并且控制信号被配置为通过开关来控制第一电路到第二电路的耦合，以消除由第一电路的输出中的接合线引入的可变偏移。

6. 发明申请

WO2013040508A1 LINEARITY ENHANCEMENT OF CAPACITIVE TRANSDUCERS BY AUTO-CALIBRATION USING ON-CHIP NEUTRALIZATION CAPACITORS AND LINEAR ACTUATION 审中-公开
标题翻译：通过使用片上中和电容器进行自动校准的线性增强的线性增强的线性增强
公开(公告)号：WO2013040508A1
公开(公告)日：2013-03-21
申请号：PCT/US2012/055645
申请日：2012-09-14
申请人： ROBERT BOSCH GMBH , BALACHANDRAN, Ganesh , PETKOV, Vladimir
发明人： BALACHANDRAN, Ganesh , PETKOV, Vladimir
IPC分类号： G01P21/00 , G01D18/00 , G01L25/00
CPC分类号： G01P21/00 , G01D18/006 , G01L25/00 , G01L27/002
摘要： A system and method are disclosed for automatically calibrating capacitive transducers to neutralize feed-through capacitance using linear actuation. The method includes starting with an initial neutralization capacitance, applying no electrostatic force and two known electrostatic forces to a proof mass of the transducer, recording the transducer output changes due to the applied forces; and determining how to revise neutralization capacitance based on the changes. The method can use a binary search to find a final neutralization capacitance providing the best linearity. The method can include comparing the final linearity to a threshold linearity. The electrostatic forces can be applied using a charge control method where the electrostatic force is a linear function of the actuation duration. The linear actuation can be used for continuous self-test of capacitive sensors.
摘要翻译：公开了一种用于自动校准电容式换能器以通过线性致动中和馈通电容的系统和方法。该方法包括从初始中和电容开始，不将静电力和两个已知的静电力施加到换能器的检测质量块，记录由于施加的力引起的换能器输出变化; 并根据变化确定如何修正中和电容。该方法可以使用二进制搜索来找到提供最佳线性度的最终中和电容。该方法可以包括将最终线性度与阈值线性度进行比较。可以使用电荷控制方法施加静电力，其中静电力是致动持续时间的线性函数。线性驱动可用于电容式传感器的连续自检。

7. 发明申请

WO2013033697A1 LINEAR CAPACITANCE-TO-VOLTAGE CONVERTER USING A SINGLE AMPLIFIER FOR TRANSDUCER FRONT ENDS WITH CANCELLATION OF SPURIOUS FORCES CONTRIBUTED BY SENSOR CIRCUITRY 审中-公开
标题翻译：线性电容电压转换器，使用单个放大器，用于传感器前端，具有通过传感器电路提供的特殊功能
公开(公告)号：WO2013033697A1
公开(公告)日：2013-03-07
申请号：PCT/US2012/053646
申请日：2012-09-04
申请人： ROBERT BOSCH GMBH , BALACHANDRAN, Ganesh , PETKOV, Vladimir
发明人： BALACHANDRAN, Ganesh , PETKOV, Vladimir
IPC分类号： G01P15/08 , G01P15/125
CPC分类号： G01P15/125 , G01P15/0802 , Y10T29/49117
摘要： Capacitive transducer systems are disclosed that reduce nonlinearities due to feedthrough capacitances or residual electrostatic forces. The systems can include a core with a first input coupled to a first variable capacitor, a second input coupled to a second variable capacitor, and a core output coupled to a common node; an amplifier with input switchably coupled to common node and an output; a feedback path switchably coupling amplifier output to common node; and a main clock with first and second phases, that controls switches coupling system components. When clock is in first phase, first core input is coupled to reference voltage, second core input is coupled to negative reference voltage, and common node is coupled to amplifier output. When clock is in second phase, core inputs are grounded, and common node is coupled to amplifier input. The system can have single amplifier. Neutralization capacitor can cancel feedthrough and parasitic capacitances.
摘要翻译：公开了电容式传感器系统，其减少由馈通电容或残余静电力引起的非线性。该系统可以包括具有耦合到第一可变电容器的第一输入的第一输入和耦合到第二可变电容器的第二输入和耦合到公共节点的核心输出的核心; 具有可转换地耦合到公共节点和输出的输入的放大器; 反馈路径将放大器输出切换耦合到公共节点; 以及具有第一和第二相的主时钟，用于控制开关耦合系统组件。当时钟处于第一阶段时，第一个核心输入耦合到参考电压，第二个核心输入耦合到负参考电压，而公共节点耦合到放大器输出。当时钟处于第二阶段时，核心输入端接地，公共节点耦合到放大器输入端。该系统可以有单个放大器。中和电容可以消除馈通和寄生电容。

8. 发明申请

WO2019032792A8 LOW POWER AND LOW DATA-RATE IMAGER 审中-公开
公开(公告)号：WO2019032792A8
公开(公告)日：2019-02-14
申请号：PCT/US2018/045948
申请日：2018-08-09
申请人： ROBERT BOSCH GMBH , PETKOV, Vladimir , KAVUSI, Sam , LAJEVARDI, Pedram , LANG, Christoph , NAIKAL, Nikhil
发明人： PETKOV, Vladimir , KAVUSI, Sam , LAJEVARDI, Pedram , LANG, Christoph , NAIKAL, Nikhil
IPC分类号： G09G5/22 , G06F1/32
摘要： An imaging system for low-power and low data-rate applications is provided. The imaging system comprises a pixel array having a plurality of photosensitive elements (pixels) divided into a plurality of groups of photosensitive elements (super pixels). An image processor is operably connected to the pixel array and configured to selectively operate each group of photosensitive elements in either (i) a high resolution mode in which the pixel array outputs readout voltages corresponding to all of the photosensitive elements in the respective group of photosensitive elements or (ii) a low resolution mode in which the pixel array outputs readout voltages corresponding to only a subset of the photosensitive elements in the respective group of photosensitive elements. Groups of photosensitive elements corresponding to detected motion in each image frame are operated in the high resolution mode, while the remaining groups of photosensitive elements are operated in the low resolution mode.

9. 发明申请

WO2019032792A1 LOW POWER AND LOW DATA-RATE IMAGER 审中-公开
公开(公告)号：WO2019032792A1
公开(公告)日：2019-02-14
申请号：PCT/US2018/045948
申请日：2018-08-09
申请人： ROBERT BOSCH GMBH , PETKOV, Vladimir , KAVUSI, Sam , LAJEVARDI, Pedram , LANG, Christoph , NAIKAL, Nikhil
发明人： PETKOV, Vladimir , KAVUSI, Sam , LAJEVARDI, Pedram , LANG, Christoph , NAIKAL, Nikhil
IPC分类号： G09G5/22 , G06F1/32
摘要： An imaging system for low-power and low data-rate applications is provided. The imaging system comprises a pixel array having a plurality of photosensitive elements (pixels) divided into a plurality of groups of photosensitive elements (super pixels). An image processor is operably connected to the pixel array and configured to selectively operate each group of photosensitive elements in either (i) a high resolution mode in which the pixel array outputs readout voltages corresponding to all of the photosensitive elements in the respective group of photosensitive elements or (ii) a low resolution mode in which the pixel array outputs readout voltages corresponding to only a subset of the photosensitive elements in the respective group of photosensitive elements. Groups of photosensitive elements corresponding to detected motion in each image frame are operated in the high resolution mode, while the remaining groups of photosensitive elements are operated in the low resolution mode.

10. 发明申请

WO2013040084A1 SCHEME TO ACHIEVE ROBUSTNESS TO ELECTROMAGNETIC INTERFERENCE IN INERTIAL SENSORS 审中-公开
标题翻译：在惯性传感器中实现电磁干扰的方案
公开(公告)号：WO2013040084A1
公开(公告)日：2013-03-21
申请号：PCT/US2012/054932
申请日：2012-09-12
申请人： ROBERT BOSCH GMBH , BALACHANDRAN, Ganesh , PETKOV, Vladimir
发明人： BALACHANDRAN, Ganesh , PETKOV, Vladimir
IPC分类号： G01P15/08 , G01P15/125 , G01D5/241
CPC分类号： G01P15/125 , G01D5/2417 , G01P15/0802 , G01R27/2605 , H01L2224/05554 , H01L2224/48091 , H01L2224/48137 , Y10T29/43 , H01L2924/00014
摘要： A capacitive sensor system and method resistant to electromagnetic interference is disclosed. The system includes a capacitive core, differential amplifier with inverting and non- inverting inputs, capacitive paths, and chopping system. Core can include inputs and outputs coupled to variable capacitors, and common nodes coupling variable capacitors. Capacitive paths couple core outputs to amplifier inputs. When chopping system is high, one polarity voltage is applied to core inputs, a first core output is coupled to the inverting input and a second core output is coupled to the non-inverting input. When the chopping system is low, opposite polarity voltage is applied to core inputs, and core output to amplifier input couplings are flipped. Capacitive paths can include bond wires. Chopping system can be varied between high and low at frequencies that smear noise away from a frequency band of interest, or that smear noise substantially evenly across a wide frequency range.
摘要翻译：公开了一种抵抗电磁干扰的电容传感器系统和方法。该系统包括电容内核，具有反相和非反相输入的差分放大器，电容路径和斩波系统。核心可以包括耦合到可变电容器的输入和输出以及耦合可变电容器的公共节点。电容路径将核心输出耦合到放大器输入。当斩波系统较高时，一个极性电压施加到核心输入，第一个核心输出耦合到反相输入端，第二个核心输出端耦合到同相输入端。当斩波系统为低电平时，相反的极性电压被施加到核心输入端，并且芯片输出到放大器输入耦合器被翻转。电容路径可以包括接合线。斩波系统可以在高频和低频之间变化，其频率可以从所关心的频带上剔除噪声，或者在宽频率范围内基本均匀地涂抹噪声。

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