Detail of JT/T 794-2011

Introduction of JT/T 794-2011

1 Scope This standard specifies general requirements, function requirements, performance requirements and installation requirements of vehicle terminals of GNSS system (hereinafter referred to as terminal). This standard is applicable to terminal equipments installed at vehicle in the GNSS system for operating vehicle. 2 Normative References The following documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, only the dated versions apply to this standard. For undated references, the latest edition of the normative document (include all the amendments) is applicable to this standard. GB/T 19056 Vehicle Traveling Data Recorder GB/T 19951 The Safety Constructional Requirements for Double-deck Large Passenger Vehicles JT/T 766-2009 BeiDou (COMPASS) Navigation Satellite System for Monitoring Boats-Technical Specification for Terminals QC/T 413 Basic Specification for Automotive Electrical Equipment QC/T 417.1 Vehicle Wire Bundle Connector Part 1: Definition, Test Method and General Performance Requirements QC/T 420 Fuse-links for Motor Vehicles QC/T 730 Road Vehicle-Low Tension Cables with Thin Wall Insulated YD/T 1050 Test Specification for 800 MHz CDMA Digital Celluar Mobile Telecommunication Network: Terminal Part YD/T 1214 Technical Requirement of 900/1800MHz TDMA Digital Cellular Mobile Telecommunication Network General Packet Radio Service (GPRS) Equipment: Mobile Stations YD/T 1367 Technical Requirements for User Equipment of 2GHz TD-SCDMA Digital Cellular Mobile Communication Network YD/T 1547 Technical Requirements for 2GHz WCDMA Digital Cellular Mobile Communication Network User Equipment (Phase 3) YD/T 1558 Technical Requirements of Mobile Station for 2GHz cdma2000 Digital Cellular Mobile Communication Network 3 Terms, Definitions and Abbreviations 3.1 Terms and definitions The following terms and definitions apply. 3.1.1 Firmware It refers to the embedded software operating at the terminal microprocessor. 3.1.2 Electronic travel permit It refers to electronic data including vehicle information and passenger and cargo information etc. 3.1.3 Continuous driving time It refers to the sum of the driving time for the same driving personnel between adjacent and over 20min rest period. Note: The rest time not exceeding 20min is deemed as the continuous driving time. 3.1.4 Monitoring center It refers to the software platform for monitoring the vehicle transportation. 3.1.5 Sleep It refers to a special state where the terminal keeps contact with monitoring center after fire failure of vehicle. 3.1.6 ACC It refers to dedicated gear of vehicle steering lock with ignition switch. 3.1.7 Dial a cab It refers to service mode to provide cab reservation or real time call for the passengers. 3.2 Abbreviations The following abbreviations are applicable to this standard. CAN-Controller Area Network (Controller Area Network). 4 General Requirements 4.1 Terminal composition 4.1.1 Host Terminal host shall include microprocessor, data accumulator, satellite positioning module, vehicle state information collection module, radio communication transport module, real time clock and data communication interface etc., may include display, printer and card reader. If the display, printer and card reader do not included in the host, they may be listed as external equipment, but the host shall be reserved corresponding interfaces. 4.1.2 External equipments The external equipments shall include satellite positioning antenna, radio communication antenna, emergency alarm push button, voice read installation, and may include communicator, function key, card reader, printer, display, equipments of vehicle operation state information display and information release etc., and acquisition equipment of information of image, video, audio, driver identity, electronic travel permit, logistics, operation, charge accounting, service assessment etc. 4.2 Appearance Terminal appearance shall be free from rust, rusty stain, cracks, color fading, spot, deformation, key coating shedding as well as obvious scratch burrs; the plastic component shall be free from bubble, crack, deformation; the potting compound shall be free from overflow; structural parts and control unit module shall be integrate without mechanical damages.

Contents of JT/T 794-2011

Foreword I 1 Scope 2 Normative References 3 Terms, Definitions and Abbreviations 4 General Requirements 5 Function Requirements 6 Performance Requirements 7 Installation Requirements Appendix A (Normative) Basic Function Requirements for Transport Vehicle Terminals of Different Types