JP2015121437A - Position information acquisition device, position information acquisition method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress the power consumption needed for reception without continuing to receive unnecessary position information.SOLUTION: A GPS unit 16 receives position information from a GPS. A GSP control unit 57 controls the GPS unit 16 so that position information is received intermittently. Also, when entry is determined by a situation determination unit 52, the GPS control unit 57 controls the GPS unit 16 so as to receive the position information. An autonomous navigation position information acquisition unit 51 acquires position information by an autonomous navigation method. The situation determination unit 52 determines, when the position information is being acquired by the autonomous navigation position information acquisition unit 51, whether or not an area where GPS reception sensitivity is good has been entered into by the autonomous navigation method. A count setting unit 55 sets a timeout time differing between a process of intermittent reception of position information by the GPS control unit 57 and a process of receiving position information when entry is determined by the situation determination unit 52.

Description

  The present invention relates to a position information acquisition device, a position information acquisition method, and a program.

  2. Description of the Related Art Conventionally, a technique for specifying a current location or displaying a movement locus on a map based on positioning from a GPS is known (see Patent Document 1).

JP 11-290390 A

  However, in the technique described in Patent Document 1 as described above, if GPS cannot be received, the longer the period during which reception is not possible, the more power is consumed in order to continue searching for satellites. . Therefore, even if the reception operation is continued in an area where the possibility of reception is low, the possibility of reception does not increase, and power is consumed unnecessarily.

  Therefore, the present invention has been made in view of such a situation, and performs a reception operation in consideration of the possibility of reception, and a position information acquisition device and position information acquisition capable of suppressing power consumption for reception. An object is to provide a method and a program.

In order to achieve the above object, a position information acquisition apparatus according to an aspect of the present invention is provided.
Receiving means for receiving position information from GPS;
First receiving control means for controlling the receiving means so as to receive the position information intermittently;
Obtaining means for obtaining the position information by autonomous navigation;
A determination unit that determines whether or not the GPS unit has entered an area where GPS reception sensitivity is good when the position information is acquired by the acquisition unit by the autonomous navigation;
A second reception control means for controlling the reception means so as to receive the position information when it is determined by the determination means to enter;
Setting means for setting different timeout times for the reception processing by the first reception control means and the reception processing by the second reception control means;
It is characterized by providing.

  According to the present invention, it is possible to perform a reception operation considering the possibility of reception and suppress power consumption for reception.

It is a block diagram which shows the hardware constitutions of the positional information acquisition apparatus which concerns on one Embodiment of this invention. It is a functional block diagram which shows the functional structure for performing a positional information acquisition process among the functional structures of the positional information acquisition apparatus of FIG. It is a flowchart explaining the flow of the positional information acquisition process which the positional information acquisition apparatus of FIG. 1 which has the functional structure of FIG. 2 performs.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing a hardware configuration of a position information acquisition apparatus according to an embodiment of the present invention.
The position information acquisition device 1 is configured as a smartphone, for example.

  The position information acquisition apparatus 1 includes a CPU (Central Processing Unit) 11, a ROM (Read Only Memory) 12, a RAM (Random Access Memory) 13, a bus 14, an input / output interface 15, a GPS unit 16, a sensor. A unit 17, an imaging unit 18, an input unit 19, an output unit 20, a storage unit 21, a communication unit 22, and a drive 23 are provided.

  The CPU 11 executes various processes according to a program recorded in the ROM 12 or a program loaded from the storage unit 21 to the RAM 13.

  The RAM 13 appropriately stores data necessary for the CPU 11 to execute various processes.

  The CPU 11, ROM 12, and RAM 13 are connected to each other via a bus 14. An input / output interface 15 is also connected to the bus 14. Connected to the input / output interface 15 are a GPS unit 16, a sensor unit 17, an imaging unit 18, an input unit 19, an output unit 20, a storage unit 21, a communication unit 22, and a drive 23.

  The GPS unit 16 receives GPS signals from a plurality of GPS (Global Positioning System) satellites including an antenna, and acquires position information of the wrist terminal 1.

The sensor unit 17 is configured to be able to measure movement of the wrist terminal 1 in the XYZ axis direction and vibration of the wrist terminal 1. The sensor unit 17 includes, for example, an acceleration sensor and a geomagnetic sensor that complement GPS.
Moreover, the sensor part 17 is comprised with the atmospheric pressure sensor which can acquire altitude information by the change of atmospheric pressure.

  Although not shown, the imaging unit 18 includes an optical lens unit and an image sensor.

The optical lens unit is configured by a lens that collects light, for example, a focus lens or a zoom lens, in order to photograph a subject.
The focus lens is a lens that forms a subject image on the light receiving surface of the image sensor. The zoom lens is a lens that freely changes the focal length within a certain range.
The optical lens unit is also provided with a peripheral circuit for adjusting setting parameters such as focus, exposure, and white balance as necessary.

The image sensor includes a photoelectric conversion element, AFE (Analog Front End), and the like.
The photoelectric conversion element is composed of, for example, a CMOS (Complementary Metal Oxide Semiconductor) type photoelectric conversion element or the like. A subject image is incident on the photoelectric conversion element from the optical lens unit. Therefore, the photoelectric conversion element photoelectrically converts (captures) the subject image, accumulates the image signal for a predetermined time, and sequentially supplies the accumulated image signal as an analog signal to the AFE.
The AFE performs various signal processing such as A / D (Analog / Digital) conversion processing on the analog image signal. Through various signal processing, a digital signal is generated and output as an output signal of the imaging unit 18.
Such an output signal of the imaging unit 18 is hereinafter referred to as “captured image data”. Data of the captured image is appropriately supplied to the CPU 11 or an image processing unit (not shown).

The input unit 19 is configured with various buttons and the like, and inputs various types of information according to user instruction operations.
The output unit 20 includes a display, a speaker, and the like, and outputs an image and sound.
The storage unit 21 is configured with a hard disk, a DRAM (Dynamic Random Access Memory), or the like, and stores various image data.
The communication unit 22 controls communication with other devices (not shown) via a network including the Internet.

  A removable medium 31 made of a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is appropriately attached to the drive 23. The program read from the removable medium 31 by the drive 23 is installed in the storage unit 21 as necessary. The removable medium 31 can also store various data such as image data stored in the storage unit 21 in the same manner as the storage unit 21.

The position information acquisition apparatus 1 configured as described above has a function of performing GPS positioning in an area where the GPS reception status is good. In addition, in the position information acquisition apparatus 1, the length of time from the activation of the GPS unit 16 to timeout (hereinafter referred to as "timeout time") according to the factor determined as the area where the GPS reception status is considered to be favorable. It has a function to change.
In the position information acquisition apparatus 1 having such a function, by performing GPS positioning in an area where the GPS reception status is good, the position information acquisition possibility in the GPS unit 16 is improved. Unnecessary power consumption can be suppressed by changing the length of the time-out time according to the factor determined to be an area where the GPS reception status is considered to be good.

FIG. 2 is a functional block diagram showing a functional configuration for executing the positional information acquisition process among the functional configurations of the positional information acquisition device 1 described above.
Position information acquisition processing is an area where the GPS reception status is good, performs GPS positioning, and acquires location information by changing the timeout time according to the factor determined to be an area where the GPS reception status is good A series of processing.

  As shown in FIG. 2, in the position information acquisition process, in the CPU 11, the autonomous navigation position information acquisition unit 51, the situation determination unit 52, the flag setting unit 53, the count setting unit 55, the count control unit 56, and the GPS The control unit 57, the GPS position information acquisition unit 58, and the altitude information acquisition unit 59 function.

  In addition, a position information storage unit 71, a situation determination information storage unit 72, and a time information storage unit 73 are set in one area of the storage unit 21.

  The position information storage unit 71 stores position information acquired by self-contained navigation and position information acquired by GPS positioning.

  The situation determination information storage unit 72 stores information (hereinafter, referred to as “situation determination information”) used to determine whether or not the GPS unit 16 is to be activated. More specifically, the situation determination information stores road network data, and includes map information used for map matching including road information structured in a graph and altitude information used for determining altitude change.

The time information storage unit 73 stores various types of time information such as an intermittent activation time of the GPS unit 16 at an intermittent interval and a timeout time corresponding to an activation factor (intersection, intermittent interval, altitude change).
The intermittent interval is set to 30 minutes in the present embodiment. The GPS unit 16 is set to operate so that the GPS unit 16 is intermittently activated 30 minutes after the previous activation.
The timeout time corresponding to the activation factor is set to be longer when the activation factor is an intermittent interval, shorter when it is an intersection, and intermittent when it is an altitude. It is set to be shorter than the interval and longer than the intersection.

  The autonomous navigation position information acquisition unit 51 acquires position information by self-contained navigation based on the grasped point. The autonomous navigation position information acquisition unit 51 stores the acquired position information in the position information storage unit 71.

The situation determination unit 52 determines whether or not the situation is a situation that causes the GPS unit 16 to start, including being in an area where the reception situation is considered to be good.
Specifically, the situation determination unit 52 matches (map matching) the position information acquired by the autonomous navigation position information acquisition unit 51 with the map information stored in the situation determination information storage unit 72, and the current location is an intersection. It is determined whether or not there is.
Moreover, the situation determination part 52 compares the sensor value acquired from the atmospheric | air pressure sensor, and determines whether there exists an altitude change and the altitude rose. Specifically, the situation determination unit 52 compares the currently acquired altitude information with the altitude information acquired immediately before the altitude information stored in the situation determination information storage unit 72, and the altitude increases. It is determined whether or not.
Moreover, the situation determination part 52 determines whether it is the starting time of the GPS part 16 in an intermittent interval.

  The flag setting unit 53 sets a flag based on the determination result of the situation determination unit 52. Moreover, the flag setting part 53 sets a flag to OFF and initializes various flags, when position information is acquired by GPS positioning.

  The state monitoring unit 54 monitors the state of the GPS unit 16. Specifically, the state monitoring unit 54 monitors the activation status of the GPs whether or not the GPS unit 16 is currently activated. In addition, the state monitoring unit 54 monitors the GPS positioning status as to whether or not the position information has been acquired by positioning at the GPS unit 16. Further, the state monitoring unit 54 monitors the timeout of the activation time of the GPS unit 16.

The count setting unit 55 refers to the timeout time stored in the time information storage unit 73 and sets the timeout time according to the activation factor.
In the present embodiment, the count setting unit 55 sets the timeout time to be different depending on the activation factor of the GPS unit 16. Specifically, if the activation factor is an intermittent interval, it is set to be long, if it is an intersection, it is set to be short, and if it is altitude, it is shorter than the intermittent interval, And set to be longer than the intersection.

  The count control unit 56 controls the start and end of the activation time count. Specifically, the count control unit 56 starts counting the activation time when the GPS unit 16 is activated, and stops counting the activation time when the activation time is timed out and the GPS unit 16 is stopped.

  The GPS control unit 57 executes a GPS activation process and a GPS stop process. Specifically, the GPS control unit 57 activates the GPS unit 16 when the activation time is set as the GPS activation process, and deactivates the GPS unit 16 when the activation time times out as the GPS stop process.

  The GPS position information acquisition unit 58 acquires position information that is a positioning result from the GPS unit 16. Thereafter, the GPS position information acquisition unit 58 stores the acquired position information in the position information storage unit 71.

  The altitude information acquisition unit 59 acquires altitude information from the sensor unit 17 that is an atmospheric pressure sensor. Thereafter, the altitude information acquisition unit 59 stores the acquired altitude information in the situation determination information storage unit 72.

FIG. 3 is a flowchart for explaining a flow of position information acquisition processing executed by the position information acquisition apparatus 1 of FIG. 1 having the functional configuration of FIG.
The position information acquisition process is started by an operation of starting the position information acquisition process to the input unit 19 by the user.

In step S11, the situation determination unit 52 performs map matching to determine whether or not the vehicle is currently at an intersection. That is, the situation determination unit 52 uses the current location predicted by autonomous navigation from the previously acquired position information (position information acquired by the autonomous navigation position information acquisition unit 51) as map information stored in the position information storage unit 71. Match and determine if you are at an intersection on the map.
If it is an intersection, YES is determined in step S11, and the process proceeds to step S12.

  In step S12, the flag setting unit 53 sets the intersection flag to ON. Thereafter, the process proceeds to step S14. The processing after step S14 will be described later.

  On the other hand, when it is not an intersection, it determines with NO in step S11, and a process progresses to step S13 after that.

  In step S13, the flag setting unit 53 sets the intersection flag to OFF. The process proceeds to step S14.

In step S14, the situation determination unit 52 determines whether the altitude has increased. That is, the situation determination unit 52 compares the current altitude information stored in the situation determination information storage unit 72 with the previous altitude information to determine whether the altitude has increased.
If the altitude is increasing, YES is determined in step S14, and the process proceeds to step S15.

  In step S15, the flag setting unit 53 sets the altitude flag to ON. Thereafter, the process proceeds to step S17. The processing after step S17 will be described later.

  On the other hand, if the altitude has not increased, NO is determined in step S14, and then the process proceeds to step S16.

  In step S16, the flag setting unit 53 sets the intersection flag to OFF. The process proceeds to step S17.

In step S17, the situation determination unit 52 determines whether or not it is during an intermittent interval. That is, the situation determination unit 52 determines whether it is time to activate the GPS unit 16 in the intermittent interval.
If it is during the intermittent interval, YES is determined in step S17, and the process proceeds to step S18.

  In step S18, the flag setting unit 53 sets the interval flag to ON. Thereafter, the process proceeds to step S20. The processing after step S20 will be described later.

  On the other hand, if it is not during the intermittent interval, NO is determined in step S17, and then the process proceeds to step S19.

  In step S19, the flag setting unit 53 sets the interval flag to OFF (OFF). The process proceeds to step S20.

In step S20, the state monitoring unit 54 determines whether or not the GPS unit 16 is in the activated state.
If the GPS unit 16 is not in the activated state, NO is determined in step S20, and the process proceeds to step S28. The processing after step S28 will be described later.
If the GPS unit 16 is in the activated state, YES is determined in step S20, and the process proceeds to step S21.

In step S21, the state monitoring unit 54 determines whether the GPS position has been acquired. That is, the state monitoring unit 54 determines whether or not the GPS position information acquisition unit 58 has acquired the position information from the GPS unit 16 as a result of the positioning in the GPS unit 16.
If the GPS position has not been acquired, NO is determined in step S21, and the process proceeds to step S22.

In step S22, the state monitoring unit 54 determines whether the activation time has timed out. In other words, the state monitoring unit 54 determines whether or not a time has elapsed after the GPS unit 16 has been started exceeding the set time.
If the start-up time has not timed out, NO is determined in step S22, and the process returns to step S21.
If the activation time has timed out, YES is determined in step S22, and the process returns to step S25. The processing after step S25 will be described later.

  On the other hand, when the GPS position is acquired, it is determined as YES in Step S21, and the process proceeds to Step S23.

  In step S23, the flag setting unit 53 initializes various flags. That is, since the flag setting unit 53 has acquired the position information, the flag setting unit 53 sets each flag to OFF and initializes the flag for acquisition again.

  In step S <b> 24, the altitude information acquisition unit 59 acquires altitude information from the barometric sensor of the sensor unit 17 and stores it in the situation determination information storage unit 72.

  In step S25, the GPS control unit 57 performs a GPS stop process. That is, the GPS control unit 57 executes a process of stopping the positioning in the GPS unit 16 in response to a timeout according to the activation factor.

  In step S26, the count control unit 56 ends the activation time count.

  In step S <b> 27, the count control unit 56 performs intermittent interval reset so that the intermittent interval starts from the time point acquired for reacquisition. The count control unit 56 starts counting so as to activate the GPS unit 16 at the intermittent interval time stored in the time information storage unit 73.

In step S28, the situation determination unit 52 determines whether there is an activation factor. That is, the situation determination unit 52 confirms whether the flag is on and determines whether there is a factor for starting the GPS unit 16.
If there is no activation factor, NO is determined in step S28, and the process returns to step S11.
If there is an activation factor, YES is determined in step S28, and the process proceeds to step S29.

In step S <b> 29, the count setting unit 55 sets a timeout time corresponding to the activation factor stored in the time information storage unit 73. Thereby, when the GPS unit 16 is activated, timeout control corresponding to the activation factor is performed.
Specifically, the time-out time corresponding to the activation factor of the count setting unit 55 is set longer when the activation factor is an intermittent interval, shorter when the activation factor is an intersection, and when it is advanced Is set shorter than the intermittent interval and longer than the intersection.

  In step S30, the GPS control unit 57 performs a GPS activation process. That is, the GPS control unit 57 activates the GPS unit 16 and starts positioning.

  In step S31, the count control unit 56 starts counting the time during which the GPS unit 16 is activated (activation time). That is, the count control unit 56 counts the activation time of the GPS unit 16.

Therefore, in the position information acquisition apparatus 1, the GPS unit 16 is activated every predetermined time by the intermittent interval, and regardless of the intermittent interval at an intersection or a high altitude where the reception state is good. The GPS unit 16 is activated. Thereby, in the positional information acquisition apparatus 1, the possibility of positioning by the GPS unit 16 can be increased.
Further, in the position information acquisition device 1, by changing the activation time of the GPS unit 16 depending on the activation factor, the activation time of the GPS unit 16 suitable for the activation factor is obtained, and unnecessary activation extension is not performed. Power consumption can be reduced.

The position information acquisition device 1 configured as described above includes the GPS unit 16, the GPS control unit 57, the autonomous navigation position information acquisition unit 51, the situation determination unit 52, and the count setting unit 55.
The GPS unit 16 receives position information from the GPS.
The GPS control unit 57 controls the GPS unit 16 so as to receive position information intermittently.
In addition, the GPS control unit 57 controls the GPS unit 16 to receive the position information when it is determined that the situation determination unit 52 has entered.
The autonomous navigation position information acquisition unit 51 acquires position information by autonomous navigation.
The situation determination unit 52 determines whether or not the vehicle has entered an area where GPS reception sensitivity is good when the position information is acquired by the autonomous navigation position information acquisition unit 51 by autonomous navigation.
The count setting unit 55 sets different time-out times for the intermittent position information reception process by the GPS control unit 57 and the position information reception process when it is determined by the situation determination unit 52.
As a result, the position information acquisition apparatus 1 changes the reception time-out time in an area where reception processing of intermittent position information that does not consider the reception status and GPS reception sensitivity with high possibility of reception is good. Thus, unnecessary power consumption can be suppressed.

The situation determination unit 52 determines whether or not the vehicle has entered an intersection as an area where GPS reception sensitivity is good.
As a result, in the position information acquisition device 1, the GPS reception without performing reception can be performed by setting an intersection where there is a high possibility that there is no obstacle around and the reception sensitivity is good as an area where the GPS reception sensitivity is good. It is possible to determine an area where the reception sensitivity of the is good.

The situation determination unit 52 determines whether the altitude is high as an area where the GPS reception sensitivity is good.
Thereby, in the position information acquisition device 1, reception is performed by setting a high altitude area where there is a high possibility that there is no obstacle around and the reception sensitivity is good as an area where the GPS reception sensitivity is good. Therefore, it is possible to determine an area where the GPS reception sensitivity is good.

  In addition, this invention is not limited to the above-mentioned embodiment, The deformation | transformation in the range which can achieve the objective of this invention, improvement, etc. are included in this invention.

In the above-described embodiment, as an example where the GPS reception status is good, it is an intersection and the altitude is high, but a place where reception can be satisfactorily performed based on a result of actual positioning is previously determined. The GPS unit 16 may be activated based on the map.
Specifically, the situation determination unit 52 can be configured to determine an area where GPS reception sensitivity is good based on a reception sensitivity map stored in advance.

  In the above-described embodiment, the map information is stored in the situation determination information storage unit 72. However, the present invention is not limited to this. For example, map information in an external server or the like is acquired via a network such as the Internet. You may comprise as follows.

In the above-described embodiment, the position information acquisition apparatus 1 to which the present invention is applied has been described using a smartphone as an example, but is not particularly limited thereto.
For example, the present invention can be applied to general electronic devices having a position information acquisition function. Specifically, for example, the present invention is applicable to a notebook personal computer, a printer, a television receiver, a video camera, a portable navigation device, a mobile phone, a digital camera, a portable game machine, and the like.

The series of processes described above can be executed by hardware or can be executed by software.
In other words, the functional configuration of FIG. 2 is merely an example and is not particularly limited. That is, it is sufficient that the position information acquisition apparatus 1 has a function capable of executing the above-described series of processes as a whole, and what functional blocks are used to realize this function is particularly limited to the example of FIG. Not.
In addition, one functional block may be constituted by hardware alone, software alone, or a combination thereof.

When a series of processing is executed by software, a program constituting the software is installed on a computer or the like from a network or a recording medium.
The computer may be a computer incorporated in dedicated hardware. The computer may be a computer capable of executing various functions by installing various programs, for example, a general-purpose personal computer.

  The recording medium including such a program is not only constituted by the removable medium 31 of FIG. 1 distributed separately from the apparatus main body in order to provide the program to the user, but also in a state of being incorporated in the apparatus main body in advance. It is comprised with the recording medium etc. which are provided in. The removable medium 31 is composed of, for example, a magnetic disk (including a floppy disk), an optical disk, a magneto-optical disk, or the like. The optical disc is composed of, for example, a CD-ROM (Compact Disk-Read Only Memory), a DVD (Digital Versatile Disc), a Blu-ray (registered trademark) Disc (Blu-ray Disc), and the like. The magneto-optical disk is configured by an MD (Mini-Disk) or the like. In addition, the recording medium provided to the user in a state of being preinstalled in the apparatus main body includes, for example, the ROM 12 in FIG. 1 in which the program is recorded, the hard disk included in the storage unit 21 in FIG.

  In the present specification, the step of describing the program recorded on the recording medium is not limited to the processing performed in time series along the order, but is not necessarily performed in time series, either in parallel or individually. The process to be executed is also included.

  As mentioned above, although several embodiment of this invention was described, these embodiment is only an illustration and does not limit the technical scope of this invention. The present invention can take other various embodiments, and various modifications such as omission and replacement can be made without departing from the gist of the present invention. These embodiments and modifications thereof are included in the scope and gist of the invention described in this specification and the like, and are included in the invention described in the claims and the equivalent scope thereof.

The invention described in the scope of claims at the beginning of the filing of the present application will be appended.
[Appendix 1]
Receiving means for receiving position information from GPS;
First receiving control means for controlling the receiving means so as to receive the position information intermittently;
Obtaining means for obtaining the position information by autonomous navigation;
A determination unit that determines whether or not the GPS unit has entered an area where GPS reception sensitivity is good when the position information is acquired by the acquisition unit by the autonomous navigation;
A second reception control means for controlling the reception means so as to receive the position information when it is determined by the determination means to enter;
Setting means for setting different timeout times for the reception processing by the first reception control means and the reception processing by the second reception control means;
A position information acquisition device comprising:
[Appendix 2]
The determination unit determines an area where the GPS reception sensitivity is good based on a reception sensitivity map stored in advance.
The positional information acquisition apparatus according to Supplementary Note 1, wherein
[Appendix 3]
The determination means determines whether or not the vehicle has entered an intersection as an area where the GPS reception sensitivity is good.
The positional information acquisition apparatus according to Supplementary Note 1, wherein
[Appendix 4]
The determination means determines whether the altitude is high as an area where the GPS reception sensitivity is good,
The position information acquisition device according to any one of supplementary notes 1 to 3, wherein
[Appendix 5]
A position information acquisition method executed by a position information acquisition apparatus including a reception unit that receives position information from GPS,
A first reception control step for controlling the receiving means so as to receive the position information intermittently;
An acquisition step of acquiring the position information by autonomous navigation;
A determination step of determining whether or not the vehicle has entered an area where GPS reception sensitivity is good when the position information is acquired by the acquisition step by the autonomous navigation;
A second reception control step of controlling the receiving means to receive the position information when it is determined that the determination step has entered;
A setting step for setting different timeout times for the reception processing by the first reception control step and the reception processing by the second reception control step;
A position information acquisition method comprising:
[Appendix 6]
A computer that controls a position information acquisition device including a receiving unit that receives position information from GPS.
First receiving control means for controlling the receiving means so as to receive the position information intermittently;
Acquisition means for acquiring the position information by autonomous navigation;
A determination unit that determines whether or not the vehicle has entered an area where GPS reception sensitivity is good when the position information is acquired by the acquisition unit by the autonomous navigation.
A second reception control means for controlling the receiving means so as to receive the position information when it is judged that the judgment means has entered;
Setting means for setting different timeout times for the reception process by the first reception control means and the reception process by the second reception control means;
A program characterized by functioning as

  DESCRIPTION OF SYMBOLS 1 ... Position information acquisition apparatus, 11 ... CPU, 12 ... ROM, 13 ... RAM, 14 ... Bus, 15 ... Input / output interface, 16 ... GPS part, 17. ..Sensor unit, 18 ... imaging unit, 19 ... input unit, 20 ... output unit, 21 ... storage unit, 22 ... communication unit, 23 ... drive, 31 ... Removable media, 51 ... autonomous navigation position information acquisition unit, 52 ... status determination unit, 53 ... flag setting unit, 54 ... status monitoring unit, 55 ... count setting unit, 56 ... Count control unit, 57 ... GPS control unit, 58 ... GPS position information acquisition unit, 59 ... altitude information acquisition unit, 71 ... position information storage unit, 72 ... situation determination information storage unit, 73 ... Time information storage unit

Claims (6)

Receiving means for receiving position information from GPS;
First receiving control means for controlling the receiving means so as to receive the position information intermittently;
Obtaining means for obtaining the position information by autonomous navigation;
A determination unit that determines whether or not the GPS unit has entered an area where GPS reception sensitivity is good when the position information is acquired by the acquisition unit by the autonomous navigation;
A second reception control means for controlling the reception means so as to receive the position information when it is determined by the determination means to enter;
Setting means for setting different timeout times for the reception processing by the first reception control means and the reception processing by the second reception control means;
A position information acquisition device comprising: The determination unit determines an area where the GPS reception sensitivity is good based on a reception sensitivity map stored in advance.
The position information acquisition apparatus according to claim 1. The determination means determines whether or not the vehicle has entered an intersection as an area where the GPS reception sensitivity is good.
The position information acquisition apparatus according to claim 1, wherein the position information acquisition apparatus is a position information acquisition apparatus. The determination means determines whether the altitude is high as an area where the GPS reception sensitivity is good,
The position information acquisition apparatus according to claim 1, wherein the position information acquisition apparatus is a position information acquisition apparatus. A position information acquisition method executed by a position information acquisition apparatus including a reception unit that receives position information from GPS,
A first reception control step for controlling the receiving means so as to receive the position information intermittently;
An acquisition step of acquiring the position information by autonomous navigation;
A determination step of determining whether or not the vehicle has entered an area where GPS reception sensitivity is good when the position information is acquired by the acquisition step by the autonomous navigation;
A second reception control step of controlling the receiving means to receive the position information when it is determined that the determination step has entered;
A setting step for setting different timeout times for the reception processing by the first reception control step and the reception processing by the second reception control step;
A position information acquisition method comprising: A computer that controls a position information acquisition device including a receiving unit that receives position information from GPS.
First receiving control means for controlling the receiving means so as to receive the position information intermittently;
Acquisition means for acquiring the position information by autonomous navigation;
A determination unit that determines whether or not the vehicle has entered an area where GPS reception sensitivity is good when the position information is acquired by the acquisition unit by the autonomous navigation.
A second reception control means for controlling the receiving means so as to receive the position information when it is judged that the judgment means has entered;
Setting means for setting different timeout times for the reception process by the first reception control means and the reception process by the second reception control means;
A program characterized by functioning as

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