EN 62047-19-2013 en Semiconductor devices - Micro-electromechanical devices - Part 19 Electronic compasses.pdf

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1、BSI Standards PublicationSemiconductor devices Micro-electromechanical devicesPart 19: Electronic compassesBS EN 62047-19:2013National forewordThis British Standard is the UK implementation of EN 62047-19:2013. It isidentical to IEC 62047-19:2013.The UK participation in its preparation was entrusted

2、 to TechnicalCommittee EPL/47, Semiconductors.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions ofa contract. Users are responsible for its correct application. The British Standa

3、rds Institution 2013.Published by BSI Standards Limited 2013ISBN 978 0 580 75937 6ICS 31.080.99Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 October 2013.Amen

4、dments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 62047-19:2013EUROPEAN STANDARD EN 62047-19 NORME EUROPENNE EUROPISCHE NORM September 2013 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komi

5、tee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B - 1000 Brussels 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 62047-19:2013 E ICS 31.080.99 English version Semiconductor devices - Micro-e

6、lectromechanical devices - Part 19: Electronic compasses (IEC 62047-19:2013) Dispositifs semiconducteurs Dispositifs microlectromcaniques - Partie 19: Compas lectroniques (CEI 62047-19:2013) Halbleiterbauelemente - Bauelemente der Mikrosystemtechnik - Teil 19: Elektronische Kompasse (IEC 62047-19:20

7、13) This European Standard was approved by CENELEC on 2013-08-21. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographi

8、cal references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibi

9、lity of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, F

10、ormer Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 62047-19:2013EN 62047-19:201

11、3 - 2 - Foreword The text of document 47F/156/FDIS, future edition 1 of IEC 62047-19, prepared by SC 47F “Microelectromechanical systems” of IEC/TC 47 “Semiconductor devices“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 62047-19:2013. The following dates are fixed: la

12、test date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2014-05-21 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2016-08-21 Attention is drawn to the possib

13、ility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 62047-19:2013 was approved by CENELEC as a European Stan

14、dard without any modification. In the official version, for Bibliography, the following note has to be added for the standard indicated: EN ISO 11606 NOTE Harmonized as ISO 11606 (not modified). BS EN 62047-19:2013 2 62047-19 IEC:2013 CONTENTS 1 Scope . 6 2 Normative references . 6 3 Terms and defin

15、itions . 6 4 Essential ratings and characteristics . 7 4.1 Composition of e-compasses . 7 4.1.1 General . 7 4.1.2 Magnetic sensor section 8 4.1.3 Acceleration sensor section . 8 4.1.4 Signal processing section 8 4.1.5 Peripheral hardware section 8 4.1.6 Peripheral software section . 8 4.1.7 DUT . 9

16、4.2 Ratings (Limiting values) . 9 4.3 Recommended operating conditions 9 4.4 Electric characteristics 9 4.4.1 General . 9 4.4.2 Characteristics of sensor sections . 9 4.4.3 DC characteristics . 10 5 Measuring methods 11 5.1 Sensitivity of the magnetic sensor section . 11 5.1.1 Purpose . 11 5.1.2 Cir

17、cuit diagram 11 5.1.3 Principle of measurement 11 5.1.4 Precaution to be observed . 12 5.1.5 Measurement procedure 12 5.1.6 Specified conditions 12 5.2 Linearity of the magnetic sensor section 13 5.2.1 Purpose . 13 5.2.2 Measuring circuit . 13 5.2.3 Principle of measurement 13 5.2.4 Precaution to be

18、 observed . 13 5.2.5 Measurement procedure 14 5.2.6 Specified conditions 14 5.3 Output of the magnetic sensor section in a zero magnetic field environment 14 5.3.1 Purpose . 14 5.3.2 Measuring circuit . 14 5.3.3 Principle of measurement 16 5.3.4 Precaution to be observed . 16 5.3.5 Measurement proce

19、dure 16 5.3.6 Specified conditions 16 5.4 Cross axis sensitivity of the magnetic sensor section 16 5.4.1 Purpose . 16 5.4.2 Measuring circuit . 16 5.4.3 Measuring method 1 17 5.4.4 Measuring method 2 18 5.4.5 Specified conditions 19 BS EN 62047-19:201362047-19 IEC:2013 3 5.5 Sensitivity and offset o

20、f the acceleration sensor section 19 5.5.1 Purpose . 19 5.5.2 Measuring circuit . 20 5.5.3 Principle of measurement 20 5.5.4 Precaution of measurement . 21 5.5.5 Measurement procedure 21 5.5.6 Specified conditions 21 5.6 Frequency bandwidth of the magnetic sensor section (analogue output) 21 5.6.1 P

21、urpose . 21 5.6.2 Measuring circuit . 21 5.6.3 Principle of measurement 22 5.6.4 Measurement procedure 23 5.6.5 Specified conditions 23 5.7 Current consumption . 23 5.7.1 Purpose . 23 5.7.2 Measuring circuit . 23 5.7.3 Principle of measurement 24 5.7.4 Precaution for measurement 24 5.7.5 Measurement

22、 procedure 24 5.7.6 Specified conditions 24 Annex A (informative) Considerations on essential ratings and characteristics . 25 Annex B (informative) Terminal coordinate system of e-compasses . 26 Annex C (informative) Descriptions of the pitch angle, roll angle, and yaw angle with drawings . 28 Bibl

23、iography 30 Figure 1 Composition of e-compasses . 8 Figure 2 Circuit to measure sensitivity . 11 Figure 3 Measuring method of linearity 13 Figure 5 Measuring circuit using a magnetic shield room or a magnetic shield box 15 Figure 6 Direction of DUT 20 Figure 7 Block diagram of frequency measurement

24、22 Figure 8 Current consumption measuring circuit 24 Figure B.1 Mobile terminal coordinate system of magnetic sensors 26 Figure B.2 Terminal coordinate system of acceleration sensors . 27 Figure C.1 Descriptions of the pitch angle, roll angle, and yaw angle with drawings 29 Table 1 Characteristics o

25、f sensor sections . 10 Table 2 DC characteristics of e-compasses 10 BS EN 62047-19:2013 6 62047-19 IEC:2013 SEMICONDUCTOR DEVICES MICRO-ELECTROMECHANICAL DEVICES Part 19: Electronic compasses 1 Scope This part of IEC 62047 defines terms, definitions, essential ratings and characteristics, and measur

26、ing methods of electronic compasses. This standard applies to electronic compasses composed of magnetic sensors and acceleration sensors, or magnetic sensors alone. This standard applies to electronic compasses for mobile electronic equipment. For marine electronic compasses, see ISO 11606. Electron

27、ic compasses are called “e-compasses” for short. Types of e-compasses are: 2-axis e-compasses, 3-axis e-compasses, 6-axis e-compasses, etc., all of which are covered by this standard. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and

28、 are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. None 3 Terms and definitions For the purposes of this document, the following terms and definitions

29、apply. 3.1 3-axis Helmholtz coil three Helmholtz coils that generate magnetic fields at right angles to each other 3.2 zero magnetic field environment magnetic field environments where magnetic field strength in a space including a device under test is lower than the strength specified Note 1 to ent

30、ry: The device under test (DUT) is defined in 4.1.7. 3.3 e-compass electronic compass compass that calculates and outputs an azimuth using the electrical output of sensors Note 1 to entry: The term “e-compass” is used as an abbreviated term of electronic compass. (See the above Scope.) 3.4 2-axis e-

31、compass e-compass that uses a 2-axis magnetic sensor as a geomagnetism detection element BS EN 62047-19:201362047-19 IEC:2013 7 3.5 3-axis e-compass e-compass that uses a 3-axis magnetic sensor as a geomagnetism detection element 3.6 6-axis e-compass e-compass that uses a 3-axis magnetic sensor as a

32、 geomagnetism detection element, and a 3-axis acceleration sensor as an gravity detection element 3.7 magnetic north direction of the horizontal component of an environment magnetic vector at a location, which is the same direction a compass points to Note 1 to entry: Geomagnetism is sometimes warpe

33、d by artificial structures (buildings, vehicles, etc.), or is sometimes affected by their magnetization especially in urban areas. Strictly, therefore, the geomagnetic vector should be called a kind of environmental magnetic vector. Although the environmental magnetic vector does not point to the ma

34、gnetic north pole exactly, here “magnetic north” is defined as the horizontal component of an environmental magnetic vector. 3.8 true north direction of the horizontal component of a vector pointing to the North Pole of the Earth (north end of rotational axis) at a location, which is the same as the

35、 north to which longitude lines or a meridian point 3.9 azimuth angle rotational angle around z-axis of a terminal coordinate system, which is defined as zero degree when the xy-plane of a terminal coordinate system is horizontal and the yz-plane includes the North Pole, where a clockwise turn is de

36、fined as positive when the z-axis is viewed from the positive direction to the negative direction Note 1 to entry: Azimuth angle is the same as the yaw angle, see Annex C. Note 2 to entry: For coordinate systems of e-compasses, see Annex B. Note 3 to entry: For an explanation with diagrams, see Anne

37、x C. Note 4 to entry: Definitions for cases in which the xy-plane of a terminal coordinate system are not horizontal are under consideration. 4 Essential ratings and characteristics 4.1 Composition of e-compasses 4.1.1 General As shown in Figure 1, an e-compass is composed of the following sections:

38、 Magnetic sensor section; Acceleration sensor section; Signal processing section; Peripheral hardware sections; Peripheral software sections. In some cases, an e-compass does not contain the acceleration sensor section and/or the peripheral hardware section. BS EN 62047-19:2013 8 62047-19 IEC:2013 K

39、ey 1 Magnetic sensor section 4 Peripheral hardware section 2 Acceleration sensor section 5 Peripheral software section 3 Signal processing section 6 DUT Figure 1 Composition of e-compasses 4.1.2 Magnetic sensor section A magnetic sensor section is a magnetic sensor to measure magnetic fields of an E

40、arths magnetism level, which measures two or more axes of magnetic fields that are at right angles to each other for calculating azimuth angles using its output. In the case of a 3-axis magnetic sensor, for example, the sensor section is composed of an x-axis sensor, a y-axis sensor, and a z-axis se

41、nsor, and the sensitivity axis of the x-axis sensor is set to the x-axis. 4.1.3 Acceleration sensor section An acceleration sensor section is an acceleration sensor to measure gravity. Vertical direction (horizontal plane) is known from its output, and then an azimuth angle is calculated based on th

42、e information with correction considering the attitude of the magnetic sensor section (tilt angle). In the case of a 3-axis acceleration sensor, for example, the sensor section is composed of an x-axis sensor, a y-axis sensor, and a z-axis sensor, and the sensitivity axis of the x-axis sensor is set

43、 to the x-axis. 4.1.4 Signal processing section A signal processing section is a circuit section to drive the sensor section and to amplify its signal. In some cases, this section includes an analog-digital converter. 4.1.5 Peripheral hardware section A peripheral hardware section includes sections

44、of a digital interface, data storage for information to control registers and devices, and an information processing. 4.1.6 Peripheral software section A peripheral software section includes not only a device driver section to acquire data but also software to convert the coordinate data from magnet

45、ic sensors and acceleration sensors and to calculate azimuth angles based on the results. 6 1 2 3 4 5 IEC 1720/13 BS EN 62047-19:201362047-19 IEC:2013 9 4.1.7 DUT The DUT is a functional composition composed of the magnetic sensor section, the acceleration sensor section, the signal processing secti

46、on, and the peripheral hardware section. For e-compasses not having the acceleration sensor section and/or the peripheral hardware section, the DUT is a functional composition composed of the magnetic sensor section and the signal processing section. Measurements of ratings and characteristics are m

47、ade using the DUT. 4.2 Ratings (Limiting values) The following items should be described in the specification, unless otherwise stated in the relevant procurement specifications. Stresses over these limits can be one of the causes of permanent damage to the devices: Power supply voltage; Input volta

48、ge; Input current; Storage temperature; Mechanical shock (requisite for 6-axis e-compasses); Maximum magnetic field (can be omitted). 4.3 Recommended operating conditions The following items should be described in the specification, unless otherwise stated in the relevant procurement specifications.

49、 These conditions are recommended in order to keep the characteristics of the DUT (the devices) stable state during operation: Power supply voltage; Input voltage; Operating temperature. 4.4 Electric characteristics 4.4.1 General Electric characteristics specified in this standard are those of sensor sections and DC characteristics. For the selection of essential ratings and characteristics, see Annex A. 4.4.2 Characteristics of sensor sections Characteristics of senso