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WO2008012990A1 - Dispositif électronique portable et procédé de contrôle de celui-ci - Google Patents

Dispositif électronique portable et procédé de contrôle de celui-ci Download PDF

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Publication number
WO2008012990A1
WO2008012990A1 PCT/JP2007/061312 JP2007061312W WO2008012990A1 WO 2008012990 A1 WO2008012990 A1 WO 2008012990A1 JP 2007061312 W JP2007061312 W JP 2007061312W WO 2008012990 A1 WO2008012990 A1 WO 2008012990A1
Authority
WO
WIPO (PCT)
Prior art keywords
calibration data
electronic device
portable electronic
unit
azimuth
Prior art date
Application number
PCT/JP2007/061312
Other languages
English (en)
Japanese (ja)
Inventor
Hideki Kashiyama
Kazuto Ito
Original Assignee
Kyocera Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kyocera Corporation filed Critical Kyocera Corporation
Publication of WO2008012990A1 publication Critical patent/WO2008012990A1/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C17/00—Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes
    • G01C17/38—Testing, calibrating, or compensating of compasses
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2250/00—Details of telephonic subscriber devices
    • H04M2250/10—Details of telephonic subscriber devices including a GPS signal receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2250/00—Details of telephonic subscriber devices
    • H04M2250/12—Details of telephonic subscriber devices including a sensor for measuring a physical value, e.g. temperature or motion

Definitions

  • the present invention relates to a portable electronic device equipped with a geomagnetic sensor and a control method thereof, and more particularly, to a portable electronic device equipped with a geomagnetic sensor that can perform calibration processing accurately and a control method thereof.
  • geomagnetic sensors have been miniaturized and reduced in price, and geomagnetic sensors are often mounted on portable electronic devices.
  • portable electronic devices include various magnetic materials such as speakers, batteries, and metal parts, these magnetic materials generate magnetic flux and affect the accuracy of the geomagnetic sensor.
  • a geomagnetic sensor mounted on a portable electronic device detects a magnetism in which “in-device magnetism” and “geomagnetism” generated by a magnetic material in the device are combined. Therefore, in order to properly maintain the accuracy of the geomagnetic sensor, a calibration for correcting the error due to “magnetism” generated by the magnetic material in the device is necessary.
  • calibration is to correct the influence of magnetism inside the portable electronic device.
  • the calibration is performed by a magnetic generating member in the portable electronic device by, for example, rotating the portable electronic device horizontally. This operation reduces the influence.
  • Magnetism generated by a magnetic generating member in a portable electronic device can change due to the influence of temperature.
  • the magnetization state of the portable electronic device as a whole changes. It will affect the measurement.
  • Patent Document 1 Japanese Patent Laid-Open No. 2004-12416 (paragraphs 0005-0007, FIG. 1)
  • portable electronic devices are equipped with various functions other than geomagnetic sensors, such as communication functions, more specifically, wireless telephone functions, mail transmission / reception functions, alarm functions, or digital functions.
  • 'Analog broadcast (for example, one segment broadcast) reception function is installed.
  • incoming calls and emails with the wireless phone function and email transmission / reception function occur at an unexpected timing, so incoming calls and emails may occur even during the calibration process.
  • the magnetic status in the portable electronic device changes, and accurate calibration data cannot be acquired. In this way, depending on the function, the magnetic status of the portable electronic device is often changed during execution.In such a case, even though the user intends to finish the calibration process correctly, it is actually not. Incorrect calibration processing may be performed and the correct orientation may not be displayed.
  • an object of the present invention is to provide a portable electronic device that can accurately perform calibration processing and calculate an accurate azimuth and a control method thereof. .
  • a portable electronic device that solves the above-described problems is as follows.
  • a mobile electronic device (cell phone terminal device, PDA, etc.) equipped with a plurality of functions, a geomagnetic sensor for detecting geomagnetism used for azimuth calculation,
  • a calibration data acquisition unit for acquiring calibration data for correcting the azimuth calculation
  • An azimuth calculating unit for calculating an azimuth using the geomagnetism and the calibration data;
  • the calibration data acquired by the calibration data acquisition unit is acquired when at least one of the plurality of functions is being executed, the calibration data is obtained by the direction calculation unit.
  • a control unit that is prohibited from being used for bearing calculation,
  • the calibration unit when the calibration data is acquired by an input unit that receives a calibration processing start operation by a user and the calibration data acquisition unit, the calibration unit is mounted on the portable electronic device.
  • a calibration unit for example, an interrupt handler
  • calibration data acquired by the calibration data acquisition unit And a calibration processing execution unit that performs calibration processing based on the above and sets correction values (sensitivity values, offsets, etc.) for each axis of the geomagnetic sensor.
  • a portable electronic device includes:
  • the control unit prohibits the calibration data from being used for azimuth calculation in the azimuth calculation unit by discarding the calibration data.
  • a portable electronic device includes:
  • the at least one function is an incoming function for a telephone (voice call, videophone, etc.), an incoming mail function, and an activation function based on time information (system clock and activation set time) in the portable electronic device ( (Typically, alarm, timer recording 'recording, etc.)
  • a portable electronic device includes:
  • the calibration data acquisition unit is controlled to re-execute calibration data acquisition. It is characterized by.
  • a portable electronic device includes:
  • the portable electronic device further includes a display unit, The control unit controls the display unit to display a message to that effect on the display unit when the acquisition of calibration data is being re-executed.
  • a portable electronic device according to a further embodiment of the present invention provides:
  • the portable electronic device further includes a display unit,
  • a display prompting selection of whether to re-execute acquisition of the calibration data for example, The display unit is controlled to display “Calibration data has been discarded. Do you want to re-execute?”) On the display unit.
  • the solution of the present invention has been described as a device (apparatus).
  • the present invention can also be realized as a method, a program, and a storage medium that records the program substantially corresponding to these. It should be understood that these are included in the scope of the present invention.
  • a detection step for detecting geomagnetism for use in azimuth calculation a data acquisition step for obtaining calibration data for correction of azimuth calculation,
  • An azimuth calculating step of calculating an azimuth using the geomagnetism and the calibration data using a calculation unit processor such as CPU, DSP, MPU;
  • Calibration data force acquired in the data acquisition step When the execution step is acquired when at least one of the plurality of functions is being executed, the calibration data is calculated as the direction.
  • FIG. 1 is a block diagram showing a basic configuration of a portable electronic device according to the present invention.
  • FIG. 2 is a functional block diagram showing an azimuth calculation process using a two-axis magnetic sensor.
  • FIG. 3 is a flowchart showing an example of a calibration operation executed by the portable electronic device according to the present invention.
  • FIG. 4 is a view showing a display example at the time of a calibration operation executed by the portable electronic device according to the present invention.
  • FIG. 1 is a block diagram showing a basic configuration of a portable electronic device according to the present invention.
  • a portable electronic device 100 includes a two-axis geomagnetic sensor (electronic connos) 110, a control unit 120, a storage unit 130, a wireless communication unit 140, a GPS signal receiving unit 150, and a memory card unit 160.
  • a key input unit 170, a display unit 180, and an audio processing unit 190 is a mobile phone terminal device.
  • the biaxial geomagnetic sensor 110 outputs geomagnetic information in the X-axis direction and the Y-axis direction, respectively, and based on these, the orientation of the portable electronic device 100 on a plane parallel to the X-axis / ⁇ -axis is calculated. Is done.
  • the biaxial geomagnetic sensor 110 measures the geomagnetism in each axial direction with reference to a predetermined coordinate system (two axes) set on a circuit board (not shown) in the casing of the portable electronic device 100.
  • a predetermined coordinate system two axes
  • a circuit board not shown
  • various methods such as a method using excitation of a coil, a method using a Hall effect, and a method using a magnetoresistive element can be used.
  • the control unit 120 controls the entire apparatus, and includes a calibration data acquisition unit 121, a calibration processing execution unit 122, a monitoring unit 123, a calibration data acquisition control unit 124, and an orientation calculation unit 125. Is provided.
  • the storage unit 130 stores various data used for processing in the control unit 120.
  • the storage unit 130 stores, for example, calibration data acquired by the calibration data acquisition unit 121 and other various information.
  • the computer program provided in the control unit 120 the address book for managing personal information such as the telephone number and email address of the communication partner, the sound source file for playing ringtones and alarm sounds, and the standby screen Image files, various setting data, and temporary data used in the program processing.
  • the storage unit 130 includes, for example, a non-volatile storage device (nonvolatile semiconductor memory, hard disk device, optical disk device, etc.), a random accessible storage device (eg, SRAM, DRAM), or the like.
  • Radio communication section 140 performs radio communication with a base station (not shown) connected to the communication network.
  • the radio communication unit 140 performs a predetermined modulation process on the transmission data supplied from the control unit 120 to convert it into a radio signal, and also transmits the antenna force.
  • a predetermined demodulation process is performed on the radio signal having the base station power received by the antenna to convert the radio signal into reception data, which is output to the control unit 120.
  • the GPS signal receiving unit 150 receives GPS signals transmitted from three or more GPS satellites orbiting a known orbit, and performs signal processing such as amplification, noise removal, and modulation on the GPS signals. The information necessary for calculating the geographical position of the portable electronic device 100 is acquired.
  • the memory card unit 160 functions as an interface for storing various information and data by inserting an external storage element such as a flash memory and using it as an external storage unit.
  • the key input unit 170 includes keys to which various functions such as a power key, a call key, a numeric key, a character key, a direction key, and a determination key are assigned, for example. When operated, a signal corresponding to the operation content is generated and input to the control unit 120 as a user instruction.
  • the display unit 180 is configured by using a display device such as a liquid crystal display panel or an organic EL panel, for example, and displays an image corresponding to the video signal supplied from the control unit 120. For example, the phone number of the callee at the time of outgoing call, the phone number of the callee at the time of incoming call, the contents of received or sent mail, date, time, remaining battery level, standby screen, etc. Displays various information.
  • the display unit 180 also displays azimuth information based on the detection result of the biaxial geomagnetic sensor 110 when performing navigation using the GPS function or displaying a standby screen.
  • the audio processing unit 190 processes an audio signal output from the speaker SP and an audio signal input from the microphone M1C.
  • the microphone MIC power is also subjected to signal processing such as amplification, analog-digital conversion, encoding, etc., and converted into digital voice data and output to the control unit 120.
  • the audio data supplied from the control unit 120 is subjected to signal processing such as decoding, digital-analog conversion, amplification, etc., and converted into an analog audio signal and output to the speaker SP.
  • FIG. 2 is a functional block diagram showing an example of an azimuth calculation process using a two-axis magnetic sensor.
  • a 2-axis magnetic sensor 200 As shown in the figure, a 2-axis magnetic sensor 200, element drive unit 210, sensor power supply 220, differential input amplifier 230, A / D converter 240, bearing calculation unit 250, and control unit 260 are provided.
  • the magnetic sensor 200 is provided with an X-axis Hall element 200X and a Y-axis Hall element 200Y!
  • the X-axis Hall element 200X and the Y-axis Hall element 200Y are, for example, on a main circuit board (not shown) mounted in parallel to the main surface (not shown) of the casing of the portable electronic device.
  • the X-axis Hall element 200X and the Y-axis Hall element 200Y are arranged so as to detect the rotation angle in the horizontal plane.
  • the X-axis Hall element 200X and the Y-axis Hall element 200Y are for detecting geomagnetism.
  • the element driving unit 210 is for switching terminals for driving the X-axis Hall element 200X and the Y-axis Hall element 200Y, that is, for selecting the Hall element to be driven. Is applied to the X-axis Hall element 200X and Y-axis Hall element 200Y, respectively.
  • the element driving unit 210 can be configured as, for example, chitsubaba driving.
  • the signals output from X-axis Hall element 200X and Y-axis Hall element 200Y are differentially input.
  • the output amplification value of the analog signal amplified by the force amplifier 230 is converted into a digital signal by the AZD converter 240 and then input to the bearing calculation unit 250.
  • direction calculation unit 250 Based on the correction instruction obtained from control unit 260, direction calculation unit 250 performs correction processing on the output amplification values of the X-axis and Y-axis digital signals and calculates the direction.
  • the azimuth calculation unit 250 does not calculate the azimuth and continues to store the output amplification values of the X-axis and Y-axis digital signals as calibration data, and obtains a predetermined amount of data. After is completed, use the calibration data properly acquired as correction data to calculate the bearing.
  • FIG. 3 is a flowchart showing an example of a calibration operation executed by the portable electronic device according to the present invention.
  • FIG. 4 is a view showing a display example at the time of the calibration operation executed by the portable electronic device according to the present invention.
  • the key input unit 170 accepts a calibration process start operation by the user, and in response to this, the control unit 120 starts the calibration operation. From this time, the user performs an operation “calibration operation” that rotates the portable electronic device horizontally.
  • step S11 the control unit 120 clears (discards) the calibration data buffer. After that, it is determined whether or not the “re-execution” flag of the calibration process is set (step S12). If the re-execution flag is not set, the process proceeds to step S15. Based on the geomagnetism detected by the 121-force two-axis geomagnetic sensor 110, calibration data acquisition for azimuth measurement (correction) is executed.
  • a monitoring unit for example, an interrupt handler
  • the control unit for example, a CPU
  • causes a force ie, an interrupt handler
  • the power ie, power
  • step S16 If it is determined in step S16 that an interrupt has occurred, the process proceeds to step S17, where the monitoring unit 123 temporarily saves various data such as the register at the time of the interrupt and the task being executed in the storage unit 130, and Corresponding to interrupt In addition to performing interrupt processing, it instructs the calibration data acquisition control unit 123 provided in the control unit 120 to re-execute calibration data acquisition and set a flag (not shown) during re-execution. In response to the re-execution instruction, the process returns to step S11, and the calibration data acquisition unit 121 that received the instruction from the calibration data acquisition control unit 124 provided in the control unit 120 clears (discards) the calibration data buffer. ) This clearing prohibits the use of data stored in the buffer. To do.
  • step S12 it is determined in step S12 that the “re-execution” flag of the calibration process is set, and the process proceeds to step S13, where whether or not the force to start re-execution is determined as shown in FIG.
  • a display prompting the user to make a selection is displayed on display unit 180. If it is selected to start re-execution, as shown in Fig. 4 (b), the display unit 180 displays that re-execution is in progress (step S14), and the actual data acquisition process in step S15 is performed. Transition. If it is determined in step S13 that re-execution is not to be started in accordance with a user instruction via the key input unit 170, the calibration operation is terminated.
  • step S16 If it is determined in step S16 that no interrupt has occurred, the process proceeds to step S18, where it is determined whether or not the calibration data has been acquired up to the required number, and until the required number is satisfied. Return to step S15 and repeat data acquisition. If it is determined in step S18 that the necessary number has been acquired, the calibration data acquisition process is terminated, and the subsequent process, for example, the calibration process execution unit 122 provided in the control unit 120 acquires Calibration processing is performed based on the calibration data, and correction values (offset, etc.) are set for each axis of the geomagnetic sensor.
  • the portable electronic device 100 has a plurality of functions and the calibration data obtained by the calibration data obtaining unit 121, for example, an interrupt such as an incoming call. It is configured to discard (clear) the calibration data if it was acquired when at least one of these functions was being executed. Therefore, the calibration data is forbidden from being used for the direction calculation by the direction calculation unit 250, and the possibility that an incorrect direction is calculated using the calibration data is reduced. .
  • the calibration data prohibition method is Other methods of prohibition are not limited to discarding, for example, a flag that prohibits the use of calibration data is added to the calibration data, thereby prohibiting the use of the calibration data for azimuth calculation. It may be.
  • the portable electronic device 100 is configured to discard the calibration data acquired when at least one of the plurality of functions is being executed. ing. Therefore, there is no possibility that calibration data unnecessary for calculating the azimuth is stored in a storage area such as the storage unit 130, and useless use of the storage area is avoided.
  • the present invention is not limited to this, and the calibration data until the function is executed may be protected, and only the calibration data after the function is executed may be discarded. As a result, calibration data that is unnecessary for calculating the azimuth is efficiently discarded.
  • any one of an incoming call function, an incoming mail function, and an activation function based on time information in the mobile electronic device is executed during acquisition of the calibration data. If configured, the calibration data is configured to be discarded. Therefore, calibration data that is not necessary for azimuth calculation by executing functions that are difficult for the user to predict when to execute such functions as an incoming call function, an incoming mail function, and a start function based on time information in a portable electronic device. May be stored in a storage area such as the storage unit 130.
  • the portable electronic device 100 discards the calibration data acquired when at least one of the plurality of functions is being executed, and re-acquires the acquisition of the calibration data. Since this is a configuration to be executed, the calibration data necessary for azimuth calculation can be reliably acquired, and the optimum azimuth can be calculated.
  • the power that is configured to re-execute the acquisition of calibration data after the calibration data is discarded.
  • the present invention is not limited to this, and after re-executing the acquisition of calibration data. , At least of several functions
  • the configuration may be such that the calibration data acquired when one function is being executed is discarded.
  • the portable electronic device 100 discards the calibration data acquired when at least one of a plurality of functions is being executed, and again acquires the calibration data.
  • the display unit 180 displays that fact, so the user of the portable electronic device 100 can easily know that the acquisition of calibration data has been re-executed.
  • the portable electronic device 100 discards the calibration data acquired when at least one of the plurality of functions is being executed, and again acquires the calibration data. Since the display unit 180 displays a message prompting the user to select whether or not to execute the force, the user of the portable electronic device 100 determines whether or not the user has the power to re-execute the acquisition of calibration data. be able to.
  • the present invention is not limited to this, and calibration data acquired when at least one of a plurality of functions is being executed is automatically acquired. May be configured to be re-executed.
  • the force showing an example of the azimuth calculation process using the biaxial magnetic sensor is not limited to this.
  • another magnetic sensor such as a triaxial magnetic sensor is used. May have been.
  • the calibration data is discarded.
  • the present invention is not limited to this, and the calibration buffer is used for azimuth calculation. This is applicable to any configuration that performs some processing that prohibits this. For example, as described above, by setting a flag indicating invalidity in the calibration buffer data, it is prohibited to use it for azimuth calculation.

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  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Telephone Function (AREA)
  • Measuring Magnetic Variables (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Traffic Control Systems (AREA)

Abstract

Dispositif électronique portable (100) comprenant un capteur de champ magnétique terrestre (110) pour la détection du champ magnétique terrestre utilisé pour calculer une direction, une section d'acquisition de données d'étalonnage (121) pour l'acquisition de données d'étalonnage pour la correction du calcul de direction, une section de calcul de direction (125) pour calculer une direction en utilisant le champ magnétique terrestre et les données d'étalonnage, et une section de contrôle (124, 120) pour éviter, lorsque les données d'étalonnage sont acquises par la section d'acquisition de données d'étalonnage en exécutant au moins une fonction parmi plusieurs fonctions, que ces données d'étalonnage ne soient utilisées pour le calcul de direction par la section de calcul de direction.
PCT/JP2007/061312 2006-07-26 2007-06-04 Dispositif électronique portable et procédé de contrôle de celui-ci WO2008012990A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006-203276 2006-07-26
JP2006203276A JP2009229062A (ja) 2006-07-26 2006-07-26 携帯電子機器

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WO2008012990A1 true WO2008012990A1 (fr) 2008-01-31

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103229020A (zh) * 2010-11-25 2013-07-31 Nec卡西欧移动通信株式会社 带电子罗盘的便携式终端及方位计算方法
CN105006170A (zh) * 2015-07-06 2015-10-28 中国船舶重工集团公司第七一〇研究所 一种基于多普勒雷达和地磁检测的车位检测系统及方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7217824B1 (ja) 2022-03-23 2023-02-03 旭化成エレクトロニクス株式会社 校正指示装置、センサ、センサシステム、校正指示方法、及びプログラム

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006005540A (ja) * 2004-06-16 2006-01-05 Yamaha Corp 携帯端末
JP2006098200A (ja) * 2004-09-29 2006-04-13 Yamaha Corp 携帯端末

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006005540A (ja) * 2004-06-16 2006-01-05 Yamaha Corp 携帯端末
JP2006098200A (ja) * 2004-09-29 2006-04-13 Yamaha Corp 携帯端末

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103229020A (zh) * 2010-11-25 2013-07-31 Nec卡西欧移动通信株式会社 带电子罗盘的便携式终端及方位计算方法
CN103229020B (zh) * 2010-11-25 2016-06-08 日本电气株式会社 带电子罗盘的便携式终端及方位计算方法
CN105006170A (zh) * 2015-07-06 2015-10-28 中国船舶重工集团公司第七一〇研究所 一种基于多普勒雷达和地磁检测的车位检测系统及方法
CN105006170B (zh) * 2015-07-06 2017-05-03 中国船舶重工集团公司第七一〇研究所 一种基于多普勒雷达和地磁检测的车位检测系统及方法

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