Construction and verification of SENT communication system

Overview

Sensors equipped in automobiles are becoming more accurate and more efficient in order to accomplish advanced regulation. These data are sent in analog method (voltage level and pulse modulation) to ECU but accuracy degradation in data transmission circuit from A/D conversion errors in ECU, increasing numbers of wire harness from multifunction sensors, increasing electromagnetic noise from motorization has been major issues. Recent years, in order to resolve these issues, a digital method SENT (Single Edge Nibble Transmission, SAE-J2716) communication is beginning to be used for high-accuracy sensors. Highly accurate and reliable data transmission can be achieved at low cost by using SENT communication equipped with error detection and capability to transmit highly accurate multiple data through single signal line. SENT communication is becoming rapidly popular in angle sensor used in steering and air flow sensors. YOKOGAWA will support construction and verification of entire communication system and evaluation of single unit IC supporting SENT through DLM2000/DLM4000 and DL850EV.

Points of application

D/A converted SENT communication data can be trend monitored as an analog value using DL850EV's SENT monitor module. You can easily compare and verify with other analog signals in the same screen in addition to recording data by setting trigger in SENT trend waveform. It performs well with confirming consistency of SENT output value and amount of physical sensor input changes in production and development field.
DLM2000/DLM4000 is able to analyze physical layer by observing SENT signal as a waveform (optional feature). Also, data decoding and triggering can be done and is ideal for troubleshooting in case such as SENT communication error due to noise effect. It can also display simple trend and list of decode results.
*1. There is a limit in DLM2000's trigger function.

Features

  • Measure up to 100 seconds of Tick 3us signal (DLM2000/4000)
    Equipped with long memory. Import and analyze long period of time worth of SENT communication data.
  • Store up to 100,000 SENT frame information (DLM2000/4000)
    Confirm physical layer waveform by associating with decoded results displayed in list format
  • Trend monitor up to 11 data per port (DL850EV)
    Fast CH(3CH), S&C, Slow CH(5CH), Error, Error Count (Integrated value of numbers of error) simultaneous waveform monitor.
  • Equipped with 2 ports per module and supports up to 8 ports with one main unit. (DL850EV)
    Simultaneous evaluation of multiple communication systems. Contributes to improvement of development efficiency.

SENT communication system

 

Industries

Related Products & Solutions

DL850E/DL850EV ScopeCorder

An all-in-one electromechanical measurement system offering the deepest measurement and analysis features to turn data into insights.

DLM2000 Mixed Signal Oscilloscopes

200, 350, and 500MHz mixed-signal oscilloscopes for every engineer. Best-in-class performance in usability, acquisition, analysis, and display—all at a price you can digest. Options include serial bus, vehicle bus, and power supply analysis functions.

DLM4000 Mixed Signal Oscilloscopes

8 channel mixed-signal oscilloscopes for every engineer in bandwidths of 350 MHz or 500 MHz. Best-in-class performance in usability, acquisition, analysis, and display.

High Speed Data Acquisition

Yokogawa high speed data acquisition systems deliver industry leading isolation, bit resolution, sampling rate, and memory depth, with independent channel hardware and easy to use software.

Oscilloscopes

Capture, analyze, and troubleshoot electrical or real-world physical signals. Oscilloscopes observe the change of electrical signals over time, continuously graphed on a display as voltage or amplitude vs. time.

ScopeCorders

A ScopeCorder is an instrument combining a mixed signal oscilloscope and portable data acquisition recorder into a modular platform designed to capture both high-speed transients and low-speed trends. Yokogawa’s ScopeCorder product family provides flexible and high-performance multi-channel test instruments by combining a variety of signal conditioning input modules, onboard calculations, and deep data acquisition storage into an off-the-shelf data acquisition solution.

Top