公开(公告)号：US10739453B2

公开(公告)日：2020-08-11

申请号：US16077147

申请日：2017-02-14

Applicant: Elmos Semiconductor Aktiengesellschaft

Inventor： Andre Schmidt ,  Egbert Spiegel ,  Guido Schlautmann ,  Stefanie Heppekausen

IPC: G01S15/931 ,  G01S7/523 ,  B06B1/02 ,  B60Q9/00 ,  G01S7/52 ,  G01S7/524 ,  G01S7/527 ,  H03H11/40 ,  G01S15/10

Abstract: The invention relates to an ultrasonic measuring system (10), in particular for measuring distance and/or as a parking aid in vehicles, having an electroacoustic ultrasonic transducer (12) which has a oscillating element (14), does not have a voltage converter, can be alternately operated as an ultrasonic transmitter and an ultrasonic receiver and has a signal connection (16), which is used either as an input or as an output of the ultrasonic transducer (12), and an earth connection (18) which is connected to earth, and a control and evaluation unit (20) for exciting the oscillating element (14) of the ultrasonic transducer (12) to emit ultrasonic waves for operating the ultrasonic transducer (12) during a transmission interval for the purpose of subsequently deactivating the excitation of the oscillating element (14) and attenuating the latter during a decay phase and for receiving and processing ultrasonic waves in a reception interval. The control and evaluation unit (20) has a bridge circuit (28) which is connected to a DC supply voltage (80) and has controllable switches (30 to 40) and a charge storage capacitance (42), the polarity of which can be reversed and which is intended to alternately output a positive and a negative excitation voltage for the signal connection (16) of the ultrasonic transducer (12) during the transmission interval. The control and evaluation unit (20) outputs a voltage pulse of substantially 0 V at the end of the transmission interval for the signal connection (16) of the ultrasonic transducer (12).

公开(公告)号：US20190025425A1

公开(公告)日：2019-01-24

申请号：US16077147

申请日：2017-02-14

Applicant: Elmos Semiconductor Aktiengesellschaft

Inventor： Andre Schmidt ,  Egbert Spiegel ,  Guido Schlautmann ,  Stefanie Heppekausen

IPC: G01S15/93 ,  G01S7/524 ,  B60Q9/00 ,  G01S7/52 ,  B06B1/02 ,  H03H11/40 ,  G01S7/527

CPC classification number: G01S15/931 ,  B06B1/0215 ,  B06B2201/30 ,  B60Q9/006 ,  G01S7/52004 ,  G01S7/523 ,  G01S7/524 ,  G01S7/527 ,  G01S15/102 ,  G01S2015/932 ,  H03H11/40

Abstract: The invention relates to an ultrasonic measuring system (10), in particular for measuring distance and/or as a parking aid in vehicles, having an electroacoustic ultrasonic transducer (12) which has a oscillating element (14), does not have a voltage converter, can be alternately operated as an ultrasonic transmitter and an ultrasonic receiver and has a signal connection (16), which is used either as an input or as an output of the ultrasonic transducer (12), and an earth connection (18) which is connected to earth, and a control and evaluation unit (20) for exciting the oscillating element (14) of the ultrasonic transducer (12) to emit ultrasonic waves for operating the ultrasonic transducer (12) during a transmission interval for the purpose of subsequently deactivating the excitation of the oscillating element (14) and attenuating the latter during a decay phase and for receiving and processing ultrasonic waves in a reception interval. The control and evaluation unit (20) has a bridge circuit (28) which is connected to a DC supply voltage (80) and has controllable switches (30 to 40) and a charge storage capacitance (42), the polarity of which can be reversed and which is intended to alternately output a positive and a negative excitation voltage for the signal connection (16) of the ultrasonic transducer (12) during the transmission interval. The control and evaluation unit (20) outputs a voltage pulse of substantially 0 V at the end of the transmission interval for the signal connection (16) of the ultrasonic transducer (12).

公开(公告)号：US20200274730A1

公开(公告)日：2020-08-27

申请号：US16784419

申请日：2020-02-07

Applicant: Elmos Semiconductor Aktiengesellschaft

Inventor： Guido Schlautmann ,  André Schmidt ,  Stefanie Heppekausen ,  Jürgen Naumann

IPC: H04L12/40 ,  H04L29/12

Abstract: Disclosed is a method for detecting an erroneous bus node address allocation in data bus systems with auto addressing using an addressing current, such as LIN data bus systems with auto addressing. The method comprises performing auto addressing of the n bus nodes, causing an addressing current to be supplied by a bus node, sensing the data bus current by the bus nodes and determining a bus node-specific bus current measurement value, deciding, whether an addressing current flows through the respective bus node, and determining a bus node-specific addressing current presence value, transmitting the bus node-specific bus current measurement value and/or the bus node-specific addressing current presence value from the bus node to the bus master, forming a supply bus node-specific result vector from the received bus node-specific addressing current presence values, and comparing the supply bus node-specific result vector and a supply bus node-specific expectation vector.

公开(公告)号：US20200166640A1

公开(公告)日：2020-05-28

申请号：US16636372

申请日：2018-08-02

Applicant: Elmos Semiconductor Aktiengesellschaft

Inventor： André Schmidt ,  Guido Schlautmann ,  Stefanie Heppekausen

IPC: G01S15/931 ,  G01S7/52 ,  G01S7/524 ,  G01S7/526 ,  G01S7/40

Abstract: The invention relates to a self-testing measuring system (SS) which may have at least three modes: an operating mode and at least two test modes. In a third test mode, a digital signal generating unit (DSO) stimulates the digital input circuit (DSI) directly by means of test signals, thereby allowing this signal string to be tested. In a second test mode, the digital signal generating unit (DSO) stimulates the analogue signal string (DR, AS) and the digital input circuit (DSI) by means of test signals, thereby allowing this signal string to be tested. In a first test mode, the digital signal generating unit (DSO) stimulates the analogue signal string (DR, AS), the measuring unit (TR) (typically an ultrasound transducer) and the digital input circuit (DSI) by means of test signals, thereby allowing this signal string to be tested and monitored for parameter compliance, in particular in respect of signal amplitudes. In the operating mode, the digital signal generating unit (DSO) stimulates the analogue signal string (DR, AS), the measuring unit (TR) (typically an ultrasound transducer) and the digital input circuit (DSI) by means of output signals, thereby allowing the signal string to be monitored for parameter compliance, in particular in respect of signal amplitudes.