概要

説明

A linear variable differential transformer (LVDT) is a sensor that accurately converts displacement into an electrical signal, serving a variety of high-precision applications. It excels in measuring dimensions and shapes (such as width and thickness), tracking motion (including vibration and acceleration), and monitoring strain due to thermal expansion and load. Additionally, it is essential for position control in valves, machine tools, and automation systems, where reliability and accuracy are crucial.

This design features an MCU with high-precision analog front-end that integrates a 24-bit ΔΣADC and a 16-bit DAC, enabling the construction of a high-precision displacement sensor system with minimal components. This streamlined system reduces design complexity while ensuring robust durability for long-term stability in harsh environments. Applicable in fields from industrial automation to scientific instrumentation, this design meets the growing demand for precise, non-contact displacement measurement, supporting critical systems in aerospace, manufacturing, and medical device development.

System Benefits:

  • High precision and speed measurements with a 24-bit ΔΣADC detect even the smallest displacements, with a sampling rate of up to 125kSPS, ensuring accurate capture of rapid changes.
  • The AC excitation function through a 16-bit DAC provides a stable and precise signal to the LVDT sensor.
  • High-performance signal processing utilizing the RXv2 core FPU enhances the system’s capabilities to perform mathematical computations quickly and effectively.

製品比較

アプリケーション

アプリケーション

  • Shape measuring machine
  • Vibration and acceleration measurement
  • Strain measurement
  • Position control

ウィニング・コンビネーションのインタラクティブダイアグラム

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Template 1 Connector Arrow.645 Connector Arrow.626 Connector Arrow.366 Connector Arrow Connector Arrow.769 Connected signals line RS-485 Transceiver RS-485 Transceiver RS-485 Transceiver 24V 24V 24V Buck Converter Buck Converter Buck Converter Bi-directional.223 Resistor - Fixed LCD/LED Segment Display Sheet.534 Sheet.535 Sheet.536 Sheet.537 Sheet.538 Sheet.539 Sheet.540 Sheet.541 Sheet.542 Sheet.543 Sheet.544 Sheet.545 Sheet.546 Sheet.547 Sheet.548 Sheet.549 Sheet.550 Sheet.551 Sheet.552 Sheet.553 Sheet.554 Sheet.555 Sheet.556 Sheet.557 Sheet.558 Sheet.559 Sheet.560 Sheet.561 Sheet.562 Sheet.563 ON ON Sheet.564 OFF OFF Sheet.565 Sheet.566 Sheet.567 Sheet.568 Sheet.569 Sheet.570 Sheet.571 Sheet.572 Capacitor Non-polarized Sheet.582 Sheet.583 Sheet.584 Sheet.585 Connector 1.599 Sheet.616 Connector 2 Bi-directional.587 To Controller To Controller To Controller LDO LDO LDO Connector Arrow.627 Connector Arrow.628 Connected signals arrow Connector Arrow.639 Connector Line.640 Connected signals arrow.641 Connected signals arrow.642 Connected signals arrow.643 Connector Arrow.646 Connector Line.647 Connector Line.656 Ground Sheet.664 Sheet.665 Ground.666 Sheet.667 Sheet.668 Non-Renesas Component.677 Transformer Inductor Iron Core.678 Line.841 Inductor Air Core.212 Sheet.681 Sheet.682 Sheet.683 Sheet.684 Sheet.685 Sheet.686 Sheet.687 Sheet.688 Sheet.689 Line.29 Connector 1.691 Connector 1.692 Connector Arrow.693 Connector Arrow.694 Sheet.695 Transformer Inductor Coreless (Air conductor) Sheet.697 Sheet.698 Sheet.699 Sheet.700 Sheet.701 Sheet.702 Sheet.703 Sheet.704 Sheet.705 Transformer Inductor Coreless (Air conductor).589 Sheet.707 Sheet.708 Sheet.709 Sheet.710 Sheet.711 Sheet.712 Sheet.713 Sheet.714 Sheet.715 Ground.716 Sheet.717 Sheet.718 Connected signals line.719 Connector 1.720 Connector Line.723 Connected signals line.728 Connector Arrow.729 5V 5V 5V AC excitation AC Excitation AC Excitation Vo Vo Vo Vi Vi Vi Linear Variable Differential Transformer *Linear Variable Differential Transformer *Linear Variable Differential Transformer LVDT* LVDT* LVDT* WS056 WS056 WS056 Absolute value circuit Absolute Value Circuit Absolute Value Circuit Absolute value circuit Absolute Value Circuit Absolute Value Circuit Absolute value circuit Absolute Value Circuit Absolute Value Circuit Power amplifier Power Amplifier Power Amplifier Connector Arrow.776 Connector Line Ground.778 Sheet.779 Sheet.780 Sheet.797 MCU MCU MCU Calculation Vo/Vi & Compensation Calculation Vo/Vi & Compensation Calculation Vo/Vi&Compensation Bi-directional SCI SCI SCI LCDC LCDC LCDC 16bit DAC 16bit DAC 16bitDAC Op Amp Bi-directional.738 BUF BUF BUF Ref Ref Ref Op Amp Comparator Sheet.790 Sheet.791 Driver Sheet.793 Sheet.794 Sheet.795 Bi-directional.220 24bit 24bit ΔΣ 24bitΔΣ Connector Arrow.648 Connector Line.655 Op Amp Op Amp Op Amp Op Amp Op Amp Op Amp Op Amp Op Amp Op Amp Op Amp Op Amp Op Amp
Exiting Interactive Block Diagram