Panasonic Intellectual Property Management Co., Ltd.

Hiroki Yoshino

Junji Nakatsuka

Koji Obata

Masaaki Nagai

Jun'ichi Naka

Koji Sakai

Takafumi Okudo

Shinichi Kishimoto

Masahiko Ohbayashi

Provided are an analog-to-digital (AD) converter, a sensor processing circuit, and a sensor system capable of improving responsiveness of feedback control. AD converter includes input part, AD conversion part, first output part, and second output part. The analog signal output from sensor is input to input part. AD conversion part digitally converts an analog signal to generate first digital data and second digital data. First output part outputs the first digital data to control circuit. Second output part outputs the second digital data to sensor before first output part outputs the first digital data.

Analog-to-digital converter, sensor processing circuit, and sensor system

An A/D converter includes an A/D conversion unit and an output unit. The A/D conversion unit includes a second A/D converter (successive approximation register A/D converter) and generates first digital data having a first number of bits and second digital data having a second number of bits, where the second number of bits is smaller than the first number of bits. The output unit provides first output information that is the first digital data and also provides second output information based on the second digital data. The output unit provides the second output information before providing the first output information.

A/D converter, sensor processing circuit, and sensor system

A digital filter is used in an A/D converter and includes a first filter and second filter. The first filter outputs first digital data by performing filter processing on output of an A/D conversion unit included in the A/D converter. The second filter outputs second digital data by performing filter processing on the output of the A/D conversion unit. The second digital data has either a lower resolution or a smaller effective number of bits than the first digital data does. The second filter outputs the second digital data before the first filter outputs the first digital data.

Digital filter, A/D converter, sensor processing circuit, and sensor system

Provided are an analog-to-digital (AD) converter, a sensor system, and a test system capable of reducing the time for test processing. AD converter includes input part, AD conversion part, first output part, and second output part. The analog signal output from sensor is input to input part. AD conversion part digitally converts an analog signal to generate first digital data and second digital data. First output part outputs the first digital data to control circuit. Second output part outputs the second digital data to test controller before first output part outputs the first digital data. In the test mode, test controller determines whether or not sensor system including sensor is in an abnormal state on the basis of the second digital data.

Analog-to-digital converter, sensor system , and test system

A component sensor detects a fluid component with improved accuracy. The component sensor includes tube () including tube side () that permits inflow of fluid (), substrate () provided to tube (), first protrusion () provided at one end of substrate (), second protrusion () provided at another end of substrate (), light emitter () that emits infrared light () toward first protrusion (), and light receiver () that receives infrared light (). Infrared light () entering substrate () through first protrusion () experiences total reflection inside substrate () and exits through second protrusion () to head for light receiver (). Tube side () includes two through holes () that each extend between an interior and an exterior of tube (). Substrate () is inserted into through holes () with a central part of substrate () being inside tube () and with the one end and the other end of substrate () that are respectively provided with first protrusion () and second protrusion () being outside tube ().

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Nara, Japan

Hiroki Yoshino