专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明公开

EP4310455A1 SENSOR SYSTEM WITH FAILURE DETECTION 审中-公开
公开(公告)号：EP4310455A1
公开(公告)日：2024-01-24
申请号：EP23178548.6
申请日：2023-06-09
申请人： Melexis Technologies NV
发明人： VERGAUWEN, Johan
IPC分类号： G01D3/08
摘要： A sensor system (100) for measuring a physical parameter, the sensor system (100) comprising one or more sensors (110), a read-out circuit (140), and a comparator (120). The one or more sensors (110) are configured for measuring the physical parameter resulting in a sensor signal on the output terminal of each of the one or more sensors. The read-out circuit (140) is connectable with the output terminal of each sensor and is configured for generating an output signal per sensor which is a measure of the physical parameter. The sensor system (100) is configured such that at least one of the one or more sensors (110) operate at different operating points. The comparator (120) is configured for comparing one or more output signals at different operating points to detect a failure of the sensor system (100).

2. 发明公开

EP3995802A1 DUAL PRESSURE SENSOR 审中-公开
公开(公告)号：EP3995802A1
公开(公告)日：2022-05-11
申请号：EP20206061.2
申请日：2020-11-05
申请人： Melexis Technologies NV
发明人： VERGAUWEN, Johan , MAES, Ben , RAMEZANI, Maliheh , VAN DER WIEL, Appolonius Jacobus
IPC分类号： G01L9/04 , G01L9/06 , G01L19/06 , G01L27/00
摘要： A controller (120) configured for monitoring disturbances of a pressure sensor assembly (110), the pressure sensor assembly (110) comprising at least two sensors (112, 114), wherein the sensors (112, 114) are configured for measuring a pressure and wherein the at least two sensors (112, 114) have a sensor dependent measurement sensitivity Sm for the pressure, and at least one of the sensors (112, 114) is sensitive for a disturbance with a sensor dependent disturbance sensitivity Sd, wherein a ratio Sm/Sd of the measurement sensitivity and the disturbance sensitivity is different for at least two sensors (112, 114), the controller (120) being configured for detecting the disturbance by comparing outputs of the at least two sensors.

3. 发明公开

EP3917013A1 CLOSED-LOOP OSCILLATOR BASED SENSOR INTERFACE CIRCUIT 审中-公开
公开(公告)号：EP3917013A1
公开(公告)日：2021-12-01
申请号：EP21175168.0
申请日：2021-05-21
申请人： Melexis Technologies NV
发明人： VERGAUWEN, Johan
IPC分类号： H03M1/60
摘要： The present invention relates to an oscillator-based sensor interface circuit comprising
- a first and a second input node arranged to receive a first and a second electrical signal representative of an electrical quantity, respectively,
- an analog filter (170) arranged to filter at least the first electrical signal,
- oscillation means (110,120) comprising at least a first oscillator arranged to receive a first oscillator input signal and a second oscillator different from the first oscillator and arranged to receive a second oscillator input signal, said first oscillator input signal being the filtered first electrical signal and said second oscillator input signal being the second electrical signal or a filtered version thereof, said first and second oscillator input signal impacting the oscillators' frequency,
- comparator means (130) arranged to compare signals coming from the first and second oscillators and for outputting a digital comparator output signal in accordance with said comparing,
- a first feedback element (180) arranged to receive a representation of the digital comparator output signal and to convert the representation into a first feedback signal to be applied to the oscillation means, either directly or combined with the first and/or second oscillator input signal, respectively,
- a digital filter (142) arranged to yield an output signal, being an filtered version of the digital comparator output signal,
- a second feedback element (150) arranged to receive the output signal and to convert the output signal into a second feedback signal, said second feedback signal to be combined with the electrical signal at the at least first and/or second input nodes, respectively.

4. 发明授权

EP3438620B1 CLOSED-LOOP OSCILLATOR BASED SENSOR INTERFACE CIRCUIT 有权
公开(公告)号：EP3438620B1
公开(公告)日：2020-09-30
申请号：EP17184589.4
申请日：2017-08-02
申请人： Melexis Technologies NV
发明人： VERGAUWEN, Johan , SACCO, Elisa
IPC分类号： G01D21/00 , G01R19/252 , G01D3/036

5. 发明公开

EP3402077A1 OSCILLATOR BASED SENSOR INTERFACE CIRCUIT 有权
公开(公告)号：EP3402077A1
公开(公告)日：2018-11-14
申请号：EP17169897.0
申请日：2017-05-08
申请人： Melexis Technologies NV
发明人： VERGAUWEN, Johan
IPC分类号： H03M1/06 , H03M1/60 , H03M1/10
CPC分类号： G01D18/00 , H03L7/0802 , H03L7/093 , H03L7/099 , H03M1/0604 , H03M1/1014 , H03M1/60
摘要： The present invention relates to an oscillator-based sensor interface circuit comprising
- at least two oscillators (21,22), at least one of which is arranged for receiving an electrical signal representative of an electrical quantity, said electrical quantity being a converted physical quantity (100),
- phase detection means (3) arranged to compare output signals of said at least two oscillators and for outputting a digital phase detection output signal in accordance with the outcome of said comparing, said phase detector output signal also being an output signal of said oscillator-based sensor interface circuit,
- a feedback element (4) arranged for converting a representation of said digital phase detection output signal into a feedback signal used directly or indirectly to maintain a given relation between oscillator frequencies of said at least two oscillators,
- means for detecting an error in said given relation between oscillator frequencies of said at least two oscillators based on said digital phase detection output signal,
- at least one tuning element (7) arranged for tuning at least one characteristic of the oscillator-based sensor interface circuit causing a change in oscillator frequency of at least one of said oscillators to reduce said detected error.

6. 发明公开

EP3832279A1 SEMICONDUCTOR STRESS SENSOR 有权
公开(公告)号：EP3832279A1
公开(公告)日：2021-06-09
申请号：EP19214147.1
申请日：2019-12-06
申请人： Melexis Technologies NV
发明人： VAN DER WIEL, Appolonius Jacobus , RAMEZANI, Maliheh , ROOMAN, Cathleen , OTTE, Laurent , VERGAUWEN, Johan
IPC分类号： G01L1/18 , G01L1/22
摘要： A piezo-resistor sensor (100) comprising: a diffusion (104) of a first conductivity type in a well (118) of an opposite second type, contacts (114) with islands (110) in the diffusion, interconnects (112) with the contacts, a shield (108) covers the diffusion between the contacts and extends over side walls of the diffusion between the contacts, each interconnect covers the diffusion at the corresponding contact and extends over edges of the diffusion, each island is at a side covered by its interconnect,
a guard ring (102) of the second type around the diffusion, the shield covers the well between the diffusion and the ring, and the edge of the ring facing the diffusion, if a gap between the shield and the interconnect is present, the ring bridges this gap, and/or the edges of the diffusion are completely covered by the combination of the shield and the interconnects.

7. 发明公开

EP3598148A1 HALF-BRIDGE DIFFERENTIAL SENSOR 有权
公开(公告)号：EP3598148A1
公开(公告)日：2020-01-22
申请号：EP18183665.1
申请日：2018-07-16
申请人： Melexis Technologies NV
发明人： GRIGOROV, Asparuh,Ivanov , VERGAUWEN, Johan
IPC分类号： G01R17/10 , G01L9/06 , G01L9/08 , G01L9/10 , G01L9/12 , G01L1/22
摘要： The present invention relates to a half-bridge signal processing circuit comprising a first and a second branch. The first branch comprises a first stimulus responsive sense element (Rpos) and a first current source (Isupply1) arranged to provide a current to the first sense element. The second branch comprises a second stimulus responsive sense element (Rneg) and a second current source (Isupply2) arranged to provide a current to said second sense element. The first and the second branch have a terminal (10) in common. The first branch comprises a first node between said the current source and the first stimulus responsive sense element configured to generate a first signal (Vp) related to a voltage over the first sense element. The second branch comprises a second node between the second current source and the second stimulus responsive sense element configured to generate a second signal (Vm) related to a voltage over the second sense element. A differential output voltage signal (Vdiff) is obtained from the difference between the first and said second signal. The differential output voltage signal (Vdiff) can next be used to determine the ratio of Vdiff to a sensor common mode output voltage Vcm.

8. 发明公开

EP3438620A1 CLOSED-LOOP OSCILLATOR BASED SENSOR INTERFACE CIRCUIT 有权
公开(公告)号：EP3438620A1
公开(公告)日：2019-02-06
申请号：EP17184589.4
申请日：2017-08-02
申请人： Melexis Technologies NV
发明人： VERGAUWEN, Johan , SACCO, Elisa
IPC分类号： G01D21/00 , G01R19/252 , G01D3/036
摘要： The present invention relates to an oscillator-based sensor interface circuit comprising
- an oscillator (200) having an input which influences its oscillating frequency,
- switching means (120) arranged for switching between at least a first and a second signal (110, 111) to be applied to the oscillator via that input, at least one (110) of said signals being an electrical signal representative of an electrical quantity, said electrical quantity being a converted physical quantity (100),
- a counter (300) arranged to count a number of cycles produced by said oscillator when receiving from an output of the oscillator a signal derived from one of said at least two signals applied to the oscillator,
- control logic (500) arranged to control the switching means (120) and to derive a control output signal (511) from a number of counted oscillator cycles when said first signal is applied to said oscillator and a number of counted oscillator cycles when said second signal is applied to said oscillator,
- a feedback element (400) arranged for converting a representation of said control output signal (511) into a feedback signal used directly or indirectly to maintain a given relation between said number of counted oscillator cycles when said first signal is applied and said number of counted oscillator cycles when said second signal is applied.

9. 发明公开

EP3917012A1 CLOSED-LOOP OSCILLATOR BASED SENSOR INTERFACE CIRCUIT 审中-公开
公开(公告)号：EP3917012A1
公开(公告)日：2021-12-01
申请号：EP20176683.9
申请日：2020-05-26
申请人： Melexis Technologies NV
发明人： VERGAUWEN, Johan
IPC分类号： H03M1/60
摘要： The present invention relates to an oscillator-based sensor interface circuit comprising
- one or more input nodes arranged to receive an electrical signal representative of an electrical quantity, said electrical quantity being a converted physical quantity,
- an analog filter (170) arranged to filter said electrical signal,
- oscillation means (110,120) comprising at least one oscillator and arranged to receive said filtered signal from said analog filter, said filtered signal impacting said at least one oscillator's frequency,
- comparator means (130) arranged to compare signals coming from said oscillation means and for outputting a digital comparator output signal in accordance with the outcome of said comparing,
- a first feedback element (180) arranged to receive a representation of said digital comparator output signal and to convert said representation into a first feedback signal to be applied to said oscillation means,
- a digital filter (142) arranged to yield an output signal of the oscillator-based sensor interface circuit, said output signal being an filtered version of said digital comparator output signal,
- a second feedback element (150) arranged to receive said output signal and to convert said output signal into a second feedback signal, said second feedback signal to be applied to said one or more input nodes.

10. 发明公开

EP3647737A1 SENSOR INTERFACE CIRCUIT 有权
公开(公告)号：EP3647737A1
公开(公告)日：2020-05-06
申请号：EP18204290.3
申请日：2018-11-05
申请人： Melexis Technologies NV
发明人： VERGAUWEN, Johan , VANDERSTEEGEN, Peter , IVANOV GRIGOROV, Asparuh
IPC分类号： G01D3/02
摘要： The present invention relates to a sensor interface circuit (120) comprising
- an input arranged to receive a sensor signal being an electrical signal representative of an electrical quantity, said electrical quantity being a physical quantity converted in a sensor,
- conversion means (123) arranged for converting said sensor signal into a digital signal,
- memory (125) to store sensor characterisation data,
- signal processing means (128) adapted to obtain a first sensor result by processing said digital signal using said sensor characterisation data,
- an output unit (122) arranged to receive and output said first sensor result, said digital signal and said sensor characterisation data. An external control unit (140) is arranged for verifying signals derived from a sensor signal received in the sensor interface circuit (120), the external control unit (140) being adapted
- to receive from said sensor interface circuit (120) said first sensor result, said digital signal and said sensor characterisation data,
- to determine a second sensor result by processing said digital signal using said sensor characterisation data in a signal processing means of said external control unit, and
- to compare said first and said second sensor result.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式