GB/T 24955.2-2010Ships and marine technology -- Transmitting heading devices (THDs) -- Part 2: Geomagnetic principles (English PDF)

Foreword

GB/T 24955 "Ships and marine technology - Heading transmitting device (THDs)" consists of three parts.

--- Part 1. Gyro compass;

--- Part 2. Geomagnetic principles;

Part --- Section 3. GNSS principles.

This part of GB/T 24955 "Ships and marine technology - Heading transmitting device (THDs)" Part 2.

This part identical with ISO 22090-2:2004 "Ships and marine technology heading transmitting device (THDs) - Part 2. Geomagnetic original Reason "(in English).

This section is equivalent translation ISO 22090-2:2004.

This part with respect to the ISO 22090-2 made the following editorial changes.

--- Preface and introduction are not included;

--- "This International Standard" word, the words "this section" in this section;

--- Reference standard in accordance with national standards for the corresponding adjustment;

--- Identification decimal "and" to ".";

--- Incorporates ISO 2005 to ISO 22090-2:2004 errata content;

--- Of expression in accordance with the provisions of GB/T 1.1-2000 made editorial changes.

Appendix A of this section is an informative annex.

This part is proposed by the China State Shipbuilding Corporation.

This part of the National Standardization Technical Committee boat ocean nautical instruments Technical Committee (SAC/TC12/SC5) centralized.

This section drafted by. China Shipbuilding Technology and Economy Research Institute.

1 Scope

This section GB/T 24955 specifies the "1974 International Convention for the Safety of Life at Sea," in line with the amended (SOLAS Convention) Section V Zhang requirements, using the principle of sending geomagnetic heading structure, performance and test information on the device.

Heading transmitting device (THD) is to provide a true ship heading information electronic devices.

In addition to compliance with the relevant standards IEC 60945 and IMOA.694 (17) provisions of the resolution of the general requirements and sensor components used outside, THD equipment shall meet the following minimum requirements.

If applied to the sensor means IMO performance standards not specified geographical area of \u200b\u200boperations, the THD operating range.

a) The minimum rotation speed of 20 °/s;

b) at least 70 ° N ~ 70 ° S.

Comply with the requirements of SOLAS regulation V chapter heading for transmitting information THD shall comply with the provisions of this section.

In addition, THD should be consistent with "international HSC Code" (HSC Code) with the requirements of Chapter 13 applies to provide heading information Dynamic requirements apparatus.

Note 1. The heading information can be used to detect and transmit a variety of techniques. We will bow to detect and transmit respectively standardization is unreasonable. Thus, each of the series of standards Section corresponding to different technologies, this section applies only to the geomagnetic techniques, other techniques corresponding to the other parts of this standard.

Note 2. In this section where citations IMOMSC.116 (73) resolutions were printed in italics.

Standard magnetic compass sensor can take this as a principle part of the geomagnetic sensor components. Furthermore, according to IMO MSC.116 (73) Resolution Requirements, THD should meet the dynamic requirements of the HSC Code. However, when THD not only for high-speed boat, the rotation speed limit available 6 °/s Generation for the 20 °/s.

2 Normative references

The following documents contain provisions which, through reference GB/T 24955 in this section constitute provisions of this section. For dated reference documents Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section.

GB/T 24949 Ships and marine technology - Marine electromagnetic compasses (GB/T 24949-2010, ISO 11606:2000, IDT) Ships and marine technology ISO 449 Class A magnetic compass, binnacle and azimuth reading device IEC 60945 Maritime navigation and radiocommunication equipment and systems - General requirements for the test results of the test methods and requirements IEC 61162 (all parts) Maritime navigation and radiocommunication equipment and systems - Digital interfaces IMOA.694 (17) resolution as the Global Maritime Distress and Safety System (GMDSS) composed of marine radio equipment and electrical parts General requirements for sub navigation aids HSC HSC international rules

3 Terms and definitions

The following terms and definitions apply to this part of the GB/T 24955 of.

Geomagnetic principle THD is based, established on the basis of the principles of the geomagnetic direction for their properties.