1       Definition

A Data Type representing analogue signals generated by information captured by an ultrasonic sensor.

2       Functional Requirements

An active time-of-flight sensor typically operating in the 40 kHz to 250 kHz range.

The main features of Ultrasound are:

  1. Ability to monitor the immediate surroundings of the vehicle (≤ 10 m).
  2. Operation frequency above 30 kHz.
  3. Low-resolution images.

3       Syntax

https://schemas.mpai.community/CAV2/V1.0/data/InputUltrasound.json

4       Semantics

Label Size Description
Header N1 Bytes Input Ultrasound Header
– Standard 9 Bytes The characters “CAV-IUS-V”
– Version N2 Bytes Major version – 1 or 2 characters
– Dot-separator 1 Byte The character “.”
– Subversion N3 Byte Minor version – 1 or 2 characters
MInstanceID N4 Bytes ID of the Virtual Space.
InputUltrasoundID N5 Bytes ID of Input Ultrasound.
UltrasoundSensorID N6 Bytes ID of Ultrasound Sensor.
InputUltrasoundData Ny Bytes Set of Input Ultrasound Data
– InputUltrasoundQualifier N12 Bytes The Qualifier of Input Ultrasound
– InputUltrasoundPayload N13 Bytes The Payload of Input Ultrasound
– InputUltrasoundDataLength N14 Bytes The Length of Input Ultrasound Data in Bytes
– InputUltrasoundDataURI N15 Bytes URI of Input Ultrasound Data
DescrMetadata N16 Bytes Descriptive Metadata

 

Label Size Description
Header N1 Bytes Input Uktrasound Header
– Standard 9 Bytes The characters “CAV-IUS-V”
– Version N2 Bytes Major version – 1 or 2 Bytes
– Dot-separator 1 Byte The character “.”
– Subversion N3 Bytes Minor version – 1 or 2 Bytes.
InputUltrasoundID N4 Bytes Identifier of Input Ultrasound Data.
UltrasoundSensorID N5 Bytes Identifier of Ultrasound Sensor.
InputUltrasoundSpaceTime N6 Bytes Total duration of Input Ultrasound Data.
InputUltrasoundData N7 Bytes Set of Input Ultrasound Data
– InputUltrasoundFormatID N8 Bytes Format ID of Input Ultrasound Data.
– InputUltrasoundDataLength N9 Bytes Data Length of Input Ultrasound Data in Bytes.
– InputUltrasoundDataURI N10 Bytes Location of Input Ultrasound Data.
InputUltrasoundAttributes[] N11 Bytes Set of Input Ultrasound Data Attributes
– InputUltrasoundAttributeID N12 Bytes ID of Attribute of Input Ultrasound Data
– UltrasoundAttributeFormatID N13 Bytes ID of Attribute Format of Input Audio Data
– InputUltrasoundAttributeLength N14 Bytes Number of Bytes in Input Ultrasound Data
– InputUltrasoundAttributeDataURI N15 Bytes URI of Data of Input Ultrasound Data

5       Data Formats

Ultrasound Data Formats are required.

6       To Respondents

Respondents are invited to:

  1. Comment or elaborate on the functional requirements of Ultrasound Sub-Types, Formats, and Attributes with the goal of achieving tracking and representation of objects for the Ultrasound Scene Description.
  2. Propose Sub-Types, Formats, and Attributes for use in the future Technical Specification: Data Types, Formats, and Attributes (MPAI-TFA).