TMS-AF-01 MICHELIN TIRE MOUNTED SENSOR DATASHEET
DATASHEET Table of contents 2 3 4 1.1 GLOSSARY ................................................................................................................................ 3 1.2 DOCUMENT CHANGE HISTORY................................................................................................ 3 INTRODUCTION ............................................................................................................................... 4 2.1 PURPOSE............................................
DATASHEET 1.1 GLOSSARY TERM AD BLE CRC GenFSK MAC PDU RF TMS MEANING Advertising Data Bluetooth Low Energy Cyclic Redundancy Check Generic Frequency Shift-Keying Media Access Control Protocol Data Unit Radio Frequency Tire Mounted Sensor 1.
DATASHEET 2 INTRODUCTION 2.1 PURPOSE This specification describes the functional requirements, and the operation of the Michelin Tire Mounted Sensor. The information is important for the design and integration with the vehicle monitoring system. 2.2 SCOPE This document applies to the Michelin TMS. This document does not intend to restrict or specify any hardware or software. The intent is only to specify the functionality and advanced features of the TMS.
DATASHEET 3 TIRE MOUNTED SENSOR 3.1 MAJOR FUNCTIONS The main functions are: - Detect if wheel is in motion (rotation) or not. Identify Tire type with an ID. Monitor and transmit temperature and battery voltage. Data will be transmitted using Bluetooth Low Energy 4.2 advertisement. 3.2 TMS-AF-01 BLOCK DIAGRAM Figure 1 - Block Diagram 3.3 TMS-AF-01 LIFETIME The sensor has been designed to meet the 3-years lifetime target.
DATASHEET 4 TMS-AF-01 SYSTEM MODES 4.1 TMS-AF-01 MODE EXPLANATION 4.1.1 STATIONARY MODE Stationary mode is used when the TMS is not in motion. There is no transmission to conserve battery life. 4.1.2 ADVERTISING MODE Advertising mode is used when the TMS detects continuous motion. This mode has a regular transmission at the interval of 1 sec. Each block contains 3 frames. Please refer to section 4.3 for more details on RF transmission.
DATASHEET 4.2.3.4 ADVERTISING PDU – PAYLOAD The advertising PDU payload contains both the advertising address and the advertising data 4.2.3.5 ADVERTISING PDU – PAYLOAD – ADVERTISING ADDRESS Each device has a unique BLE MAC address as described in the BLE 4.2 specification which is included in the frames. 4.2.3.6 ADVERTISING PDU – PAYLOAD – ADVERTISING DATA 4.2.3.7 FLAGS Each message will start with a flag field. 4.2.3.8 COMPLETE LOCAL NAME Each message will contain complete local name. 4.2.3.
DATASHEET 4.2.3.12 TIRE TYPE ID The Tire type ID is a 3 bytes hardcoded value set to “0x43 0x55 0x50”. 4.2.3.13 CYCLE COUNTER VALUE BYTE The cycle counter value is one byte of data.
