JP2012168868A - Sensing system, information server, mobile communication apparatus and locus information generating method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sensing system that can generate route information while restraining an increase in power consumption and to generate locus information combined with related information on the route.SOLUTION: A sensing system comprises: a positional information acquiring unit 11 that acquires positional information on a mobile communication apparatus 50 between at least two points in response to shifting of the mobile communication apparatus 50; a route estimating unit 12 that estimates the route of shifting between at least two points by using the positional information and information on the timing of having acquired the positional information; a sensor information acquiring unit 13 that acquires sensor information while acquiring the positional information on the at least two points; and a locus information generating unit 14 that estimates the position of having acquired the sensor information by using the timing of having acquired the sensor information on an estimated route of shifting and generates locus information of the mobile communication apparatus 50 by combining the sensor information and the estimated route of shifting.

Description

  The present invention relates to a sensing system, an information server, a mobile communication device, and a trajectory information generation method for generating trajectory information of a mobile communication device using sensor information detected in the mobile communication device and mobile communication device position information.

  2. Description of the Related Art In recent years, sensors for sensing environmental information and the like are mounted on mobile terminal devices typified by mobile phones and smartphone terminals. The mobile terminal device updates the sensor information to the information server using the data communication function. The information server analyzes the received sensor information.

  Here, Patent Document 1 discloses a system that collects weather information using an observation device that observes weather information at a fixed point and a mobile phone device that observes weather information at a position away from the observation device. . In this case, the meteorological information observed in the mobile phone device is used to supplement the meteorological information in a region where the observation device does not exist. In addition to the weather information, the mobile phone device also sends the location information of the observed weather information to the weather information collection center. Thereby, for example, the meteorological information collection center can determine that the meteorological information collected when the mobile phone device is indoors is not effective for analyzing the meteorological information and delete it.

  Patent Document 2 discloses a news gathering support system that associates position information with image data, voice data, and the like (hereinafter referred to as news gathering data) acquired at a news gathering terminal (mobile phone terminal) and updates the information to an electronic newspaper server. It is disclosed. By associating the coverage data with the location information, the editor who has received the coverage data can make a request for support coverage to other interviewers in the vicinity.

  Patent Document 3 discloses that a travel diary or a travel experience multimedia diary is created by combining a travel route and multimedia data such as video, audio or photo captured on the travel route. Yes. In this case, the path information is recorded substantially continuously between the positions supplemented with the multimedia data. As a result, a route indicating the movement history is generated.

JP 2003-329779 A JP 2005-354717 A JP-T-2006-526945

  However, the weather information center disclosed in Patent Document 1 collects weather information from the mobile phone device and also collects position information from the mobile phone device. Therefore, when the weather information center collects a lot of weather information from the mobile phone device and analyzes the weather information in detail, the mobile phone device needs to frequently collect location information. In this case, the mobile phone device collects location information using, for example, GPS (Global Positioning System). However, the power consumption associated with the location information collection process is large, and it is difficult to frequently execute the location information collection process in a miniaturized mobile phone device. Also in Patent Document 2, it is necessary to transmit the position information every time the coverage data is updated, and there is still a problem of causing an increase in power consumption accompanying the position information collection process. Also in Patent Document 3, since route information is continuously recorded, there arises a problem of causing an increase in power consumption associated with position information collection processing.

  In order to solve such a problem, the present invention generates a path information while suppressing an increase in power consumption, and can generate trajectory information that combines related information on the path, an information server, a movement It is an object of the present invention to provide a communication device and a trajectory information generation method.

  A sensing system according to a first aspect of the present invention includes a position information acquisition unit that acquires position information of the mobile communication device at at least two points according to movement of the mobile communication device, the position information, and the position information. Using the timing information acquired, and a route estimation unit that estimates a movement path between the at least two points, a sensor information acquisition unit that acquires sensor information while acquiring position information of the at least two points, The sensor information acquisition timing is used to estimate the acquisition position of the sensor information on the estimated travel route, and the trajectory information of the mobile communication device combining the sensor information and the estimated travel route is obtained. A sensing system comprising: a trajectory information generating unit for generating.

  An information server according to a second aspect of the present invention includes a position information acquisition unit that acquires position information of the mobile communication device from at least two points according to movement of the mobile communication device, and the position information. And a path estimation unit that estimates a movement path between the at least two points using the timing information at which the position information is measured in the mobile communication device, and between the position information of the at least two points. Using the sensor information acquisition unit that acquires the detected sensor information from the mobile communication device and the timing at which the sensor information is detected, the detection position of the sensor information on the estimated movement path is estimated, A trajectory information generation unit that generates trajectory information of the mobile communication device that combines sensor information and the estimated travel path.

  A mobile communication device according to a third aspect of the present invention is a mobile communication device, a position information receiving unit for positioning position information at at least two points according to movement of the mobile communication device, and at least two points. A sensor information detection unit that detects sensor information while acquiring the position information, and an information server for estimating the movement path of the mobile communication device, the position information and timing information obtained by positioning the position information. The information is transmitted to the information server, and further, the sensor information and the timing information at which the sensor information is detected are transmitted to the information server in order to generate trajectory information in which the sensor information is mapped on the estimated movement path. A communication unit.

  The trajectory information generation method according to the fourth aspect of the present invention acquires position information of the mobile communication device at at least two points from the mobile communication device in accordance with movement of the mobile communication device, the position information, The mobile communication device estimates a movement path between the at least two points using timing information obtained by positioning the position information, and sensor information detected while the position information of the at least two points is measured is used as the sensor information. A detection position of the sensor information on the estimated movement path is estimated using a timing acquired from the mobile communication device and the sensor information is detected, and the sensor information and the estimated movement path are combined. Further, the trajectory information of the mobile communication device is generated.

  The present invention provides a sensing system, an information server, a mobile communication device, and a trajectory information generation method capable of generating path information while suppressing an increase in power consumption and generating trajectory information combining related information on the path. can do.

1 is a configuration diagram of a sensing system according to a first embodiment. 1 is a configuration diagram of a mobile communication apparatus according to a first embodiment. 1 is a configuration diagram of an information server according to a first embodiment. FIG. 3 is a screen for displaying trajectory information according to the first exemplary embodiment. 3 is a processing flow of position information acquisition in the mobile communication device according to the first exemplary embodiment; 4 is a sensor information acquisition process flow in the mobile communication apparatus according to the first exemplary embodiment; 3 is a flow of generating trajectory information in the information server according to the first embodiment. 4 is a process flow of route estimation in the information server according to the first exemplary embodiment; 6 is a detailed process flow of fourth and fifth route searches according to the first embodiment; 10 is a detailed process flow of a sixth route search according to the first exemplary embodiment; 6 is a screen for selecting a moving unit according to the first embodiment; 6 is a processing flow of position information acquisition in the mobile communication device according to the second exemplary embodiment; 10 is a processing flow for determining movement start / stop in the mobile communication apparatus according to the third embodiment; 10 is a processing flow of position information acquisition in the mobile communication device according to the third exemplary embodiment; FIG. 10 is a flowchart of generation processing of locus information according to the fourth embodiment.

(Embodiment 1)
Embodiments of the present invention will be described below with reference to the drawings. A sensing system according to Embodiment 1 of the present invention will be described with reference to FIG. The sensing system according to the first exemplary embodiment of the present invention includes an information server 10 and a mobile communication device 50. The mobile communication device is a mobile phone terminal, a smartphone terminal, a PHS (Personal Handy-phone System) terminal, or the like. The information server 10 includes a position information acquisition unit 11, a route estimation unit 12, a sensor information acquisition unit 13, and a trajectory information generation unit 14. In this figure, the position information acquisition unit 11, the route estimation unit 12, the sensor information acquisition unit 13, and the trajectory information generation unit 14 are provided in the information server 10, but are provided in different devices. Also good. That is, the apparatus in which the position information acquisition unit 11, the route estimation unit 12, the sensor information acquisition unit 13, and the trajectory information generation unit 14 are arranged is not limited to the configuration in FIG.

  The position information acquisition unit 11 acquires position information of the mobile communication device 50 at least at two points according to the movement of the mobile communication device 50. The position information acquisition unit 11 acquires position information from the mobile communication device 50 via wireless communication. The mobile communication device 50 calculates latitude and longitude information indicating the current position using, for example, GPS. The position information acquisition unit 11 receives latitude and longitude information calculated in the mobile communication device 50. Further, the mobile communication device 50 may calculate position information based on the communication status with the base station device that is currently communicating. The position information acquisition unit 11 outputs the acquired position information to the route estimation unit 12.

  The route estimation unit 12 estimates a movement route between at least two points by using the position information output from the position information acquisition unit 11 and the timing information at which the position information is acquired by the mobile communication device 50. The timing information may be, for example, time information when the mobile communication device 50 acquires position information, time elapsed information from a specific time, or the like.

  The estimation of the movement path between at least two points may be performed as follows, for example. First, the route estimation unit 12 calculates the travel time between the departure point and the arrival point using the timing information. Next, the route estimation unit 12 calculates the travel times of a plurality of travel routes between the departure point and the arrival point, and compares them with the actual travel time of the mobile communication device 50. The route estimation unit 12 estimates the travel time of the travel route closest to the actual travel time of the mobile communication device 50 as the travel route of the mobile communication device 50. The route estimation unit 12 outputs the estimated movement route to the trajectory information generation unit 14.

  The sensor information acquisition unit 13 acquires sensor information while the position information acquisition unit 11 acquires position information of at least two points. The period during which two pieces of position information are acquired is, for example, a period from when the position information acquisition unit 11 acquires position information at the starting point of the mobile communication device 50 to the next acquisition of position information at the arrival point. The sensor information is, for example, acceleration sensor information, temperature sensor information, humidity sensor information, atmospheric pressure sensor information, or the like. Moreover, sensor information other than these may be sufficient. The sensor information acquisition unit 13 may acquire sensor information once or acquire sensor information a plurality of times while acquiring position information of two points. The sensor information acquisition unit 13 outputs the acquired sensor information and timing information at which the sensor information is acquired in the mobile communication device 50 to the trajectory information generation unit 14.

  The trajectory information generation unit 14 estimates the acquisition position of the sensor information on the moving route output from the route estimation unit 12 using the timing at which the sensor information is acquired. Further, the trajectory information generation unit 14 generates trajectory information of the mobile communication device 50 that combines the sensor information and the estimated travel path. The estimation of the acquisition position of the sensor information on the movement route may be performed as follows. For example, when the timing at which sensor information is acquired in the mobile communication device 50 is a minute after the mobile communication device 50 departs from the starting point, the trajectory information generation unit 14 estimates in the route estimation unit 12. It is estimated that sensor information has been acquired at a position a minutes after the starting point on the travel route.

  The trajectory information is information obtained by combining the travel route information and sensor information at each passing point on the travel route. For example, when the sensor information is humidity information, the trajectory information can indicate how the humidity information changes in the path along which the mobile communication device 50 has moved.

  As described above, by using the sensing system of FIG. 1, it is possible to estimate the movement route of the mobile communication device 50 and further generate the trajectory information without increasing the number of times position information is acquired. Thereby, an increase in power consumption in the mobile communication device 50 can be suppressed.

  Then, the structural example of the mobile communication apparatus 50 concerning Embodiment 1 of this invention is demonstrated using FIG. The mobile communication device 50 includes a control unit 51, a GPS reception unit 52, a display unit 53, a sensing unit 54, a timer unit 55, an operation unit 56, a wireless communication unit 57, a memory unit 58, and a telephone unit. 59. Each component is connected via a bus.

  The control unit 51 performs various controls and calculations in the mobile communication device 50. The control unit 51 is configured by a CPU (Central Processing Unit) or the like. The GPS receiver 52 receives position information indicating the current position of the mobile communication device 50 from a GPS satellite. The position information is information indicating latitude and longitude. The display unit 53 displays information processed in the mobile communication device 50. The display unit 53 is configured by a liquid crystal display or the like. The sensing unit 54 receives sensor information from various sensors. Examples of the various sensors include an acceleration sensor, a temperature sensor, a humidity sensor, and an atmospheric pressure sensor, and may be other sensors.

  The timer unit 55 outputs information on the current time to the bus. The operation unit 56 performs an operation of the mobile communication device 50 based on information input from a user or the like who operates the mobile communication device 50. The operation unit 56 includes physical buttons, a touch pad, and the like. The wireless communication unit 57 performs data communication through a mobile communication network that is a public communication network. The wireless communication unit 57 communicates with a base station on the mobile communication network using a predetermined wireless communication standard. The memory unit 58 stores various control programs to be executed by the control unit, position information, time information, sensor information, and the like. The telephone unit 59 performs a telephone operation when the mobile communication device 50 is used as a mobile phone.

  The position information received at the GPS receiving unit 52, the time information at which the position information is received, the sensor information received at the sensing unit 54, and the time information at which the sensor information is received are transmitted via the wireless communication unit 57 to the information server 20. Sent to.

  In this figure, GPS information is used as an example of position information. However, in a cellular phone, the radio wave situation when communicating with a base station and the radio wave situation when communicating with a WLAN access point are It may be used for identification or accuracy improvement.

  Next, a detailed configuration example of the information server 20 according to the first embodiment of the present invention will be described with reference to FIG. The same parts as those in FIG. 1 are denoted by the same reference numerals, and detailed description thereof is omitted. The information server 20 in FIG. 3 includes a position information acquisition unit 11, a route estimation unit 12, a sensor information acquisition unit 13, a trajectory information generation unit 14, a data communication unit 21, and a map information database (map information DB) 22. And a traffic information database (traffic information DB) 23.

  The data communication unit 21 communicates with the mobile communication device 50 via a mobile communication network that is a public communication network, an IP network, or the like. The mobile communication device 50 communicates with the public communication network using a wireless line or a wired line. The data communication unit 21 outputs the position information received from the mobile communication device 50 and the time information when the mobile communication device 50 receives the position information using the GPS receiving unit 52 to the position information acquisition unit 11. In addition, the data communication unit 21 outputs the sensor information received from the mobile communication device 50 and the time information at which the mobile communication device 50 receives the sensor information using the sensing unit 54 to the sensor information acquisition unit 13.

  The position information acquisition unit 11 extracts address information and the like corresponding to the position information received from the data communication unit 21 from the map information DB 22. The position information acquisition unit 11 outputs the extracted address information and the like and time information when the mobile communication device 50 receives the position information using the GPS reception unit 52 to the route estimation unit 12.

  The route estimation unit 12 estimates a plurality of routes that are candidates between the departure point and the arrival point from the received address information at the departure point and the address information at the arrival point. If there is one candidate route, one route is estimated. The route estimation unit 12 extracts from the traffic information DB 23 whether or not a transportation means such as a train or a bus exists in the estimated plurality of routes. The route estimation unit 12 calculates the travel time for the estimated plurality of routes in consideration of the travel time using the transportation means. The route estimation unit 12 selects a route having a travel time close to the actual travel time obtained from the time information obtained by calculating the location information using the GPS receiver 52 in the mobile communication device 50 among the travel times of the estimated plurality of routes. And output to the trajectory information generation unit 14.

  The trajectory information generation unit 14 generates trajectory information from the path information received from the path estimation unit 12 and the sensor information received from the sensor information acquisition unit 13 as in FIG. In addition, the trajectory information generation unit 14 may map the generated trajectory information to map data and store it in a format that can be displayed on a communication terminal such as a mobile phone terminal or a personal computer. The trajectory information may be shown as shown in FIG. 4, for example. The trajectory information in FIG. 4 shows an example in which route information is combined with temperature information as sensor information.

  Next, a flow of position information acquisition processing in the mobile communication device according to the first embodiment of the present invention will be described with reference to FIG. First, when the sensing system is started by an operation of a user holding the mobile communication device 50, the control unit 51 activates the GPS receiving unit 52 to perform GPS positioning (S11). The GPS receiver 52 calculates latitude and longitude information of the current mobile communication device based on GPS information acquired from GPS satellites.

  Next, the control unit 51 receives current time information from the timer unit 55 (S12). Next, the control unit 51 combines the calculated latitude and longitude information with the time information and outputs the information from the wireless communication unit 57 to the information server 20 via the public communication network (S13).

  Next, the control unit 51 determines whether or not a predetermined period has elapsed since the GPS positioning was performed in step S11 (S14). In order to perform GPS positioning after the elapse of the predetermined period, the predetermined period is determined as an allowable period in terms of power in the mobile communication device. For example, a relatively short period may be determined when the battery capacity is sufficient, and a relatively long period may be determined when the battery capacity is insufficient. When it is determined that the predetermined period has not elapsed, the control unit 51 repeats the process of step S14. When it is determined that the predetermined period has elapsed, the control unit 51 determines whether or not an instruction to stop GPS positioning is given by a user operation or the like (S15). If there is no GPS positioning stop instruction, the process returns to step S11 to execute GPS positioning. When there is a GPS positioning stop instruction, the control unit 51 ends the process.

  Next, a flow of sensor information acquisition processing in the mobile communication device according to the first embodiment of the present invention will be described with reference to FIG. First, when a sensing system is started by an operation of a user holding the mobile communication device 50, the control unit 51 sets an interval for acquiring sensor information to the timer unit 55 (S21). The sensor information acquisition interval is set to be shorter than the GPS positioning interval. Alternatively, sensor information may be acquired as continuous information, for example, by setting the acquisition interval as short as 100 ms.

  Next, the control unit 51 determines whether or not a predetermined interval set in the timer unit 55 has elapsed (S22). When it is determined that the predetermined interval has not elapsed, the control unit 51 repeats the process of step S22. When it is determined that the predetermined interval has passed, the control unit 51 receives current time information from the timer unit 55 (S23).

  Next, the control part 51 receives various sensor information via the sensing part 54 (S24). For example, the control unit 51 receives acceleration information from the acceleration sensor. Further, the control unit 51 calculates the step count information using the acceleration information. The control unit 51 associates the calculated step count information with the time information received in step S23 and stores it in the memory unit 58. The control unit 51 receives temperature information from the temperature sensor, humidity information from the humidity sensor, and atmospheric pressure information from the atmospheric pressure sensor. The control unit 51 associates each received sensor information with the time information received in step S23 and stores it in the memory unit 58.

  Next, the control unit 51 determines whether or not there is an instruction to stop the acquisition of sensor information by a user operation or the like (S25). If there is no stop instruction, the control unit 51 returns to step S22 and monitors the timer. The control part 51 complete | finishes a process, when there exists a cancellation instruction | indication.

  Next, the flow of trajectory information generation processing of the information server according to the first embodiment of the present invention will be described using FIG. The information server 20 is in a state where the data communication unit is activated and waiting for data transmission from the mobile communication device 50. First, the position information acquisition unit 11 receives position information and time information from the mobile communication device 50 (S31). Next, the sensor information acquisition unit 13 receives sensor information and time information from the mobile communication device 50 (S32). Since the acquisition interval of the sensor information in the mobile communication device 50 is shorter than the acquisition interval of the position information, the sensor information acquisition unit 13 receives a plurality of sensor information in step S32.

  Next, the position information acquisition unit 11 receives the second position information from the mobile communication device 50 (S33). Next, the route estimation unit 12 sets the position information and time information received in step S31 as a starting point (S34). Next, the route estimation unit 12 sets the position information and time information received in step S33 as arrival points (S35). Next, the route estimation unit 12 estimates a travel route from position information and time information at the departure point and arrival point (S36). Next, the trajectory information generation unit 14 generates trajectory information by associating the estimated movement route with the sensor information acquired by the sensor information acquisition unit 13.

  Next, the flow of the route estimation process in the information server according to the first embodiment of the present invention will be described with reference to FIG. First, the position information acquisition unit 11 extracts the position information received from the data communication unit 21, that is, address information corresponding to the departure point and the arrival point, from the map information DB 22 (S41). The position information acquisition unit 11 outputs the extracted address information and the like to the route estimation unit 12.

  Next, the route estimation unit 12 estimates a plurality of routes that are candidates between the departure point and the arrival point from the received address information at the departure point and the address information at the arrival point. If there is one candidate route, one route is estimated. The route estimation unit 12 extracts from the traffic information DB 23 whether or not there are transportation means such as trains and buses in the estimated plurality of routes (S42). Further, the route estimation unit 12 may receive road congestion information, a railway route map, a bus route map, timetable information, and the like from the traffic information DB 23.

  Next, the route estimation unit 12 calculates a travel time corresponding to the transportation means (movement means) extracted from the traffic information DB 23 (S43). For example, as the first route search, the travel time when the shortest route between the departure point and the arrival point is all moved on foot is calculated. In addition, as the second route search, the travel time when the shortest route between the departure point and the arrival point is all moved by bicycle is calculated. In addition, as the third route search, the travel time when all the shortest routes between the departure point and the arrival point are moved by the automobile is calculated. Here, in the shortest route, when there is a route that cannot be traveled by a car, such as a narrow road or a staircase, a route that can be traveled by a car is searched, and the travel time is calculated. In addition, as the fourth route search, the travel time when moving to the nearest station of the departure point and the arrival point on foot and moving between the stations by train is calculated. Further, as the fifth route search, a travel time is calculated when walking to the nearest station of the departure point and arrival point and moving between the stations by bus. In addition, as the sixth route search, a travel time is calculated when walking to a bus stop nearest to the departure point and arrival point and moving between bus stops by bus and train.

  Next, the travel times calculated in the first to sixth route searches are compared with the actual travel time (S44). Next, based on the result of comparison in step S44, a movement route is estimated (S45). Specifically, in the comparison between the travel times calculated in the first to sixth route searches and the actual travel time, the route with the smallest time difference is estimated as the actual travel route.

  Next, a detailed processing flow of the fourth and fifth route searches will be described with reference to FIG. First, the route estimation unit 12 searches the map information received from the position information acquisition unit 11 for the nearest station of the departure point and the arrival point (or the nearest bus stop, the same applies hereinafter) (S51). Next, the route estimation unit 12 determines whether or not the nearest stations of the departure point and the arrival point are the same (S52). Next, when it is determined that the nearest stations of the departure point and the arrival point are different, the route estimation unit 12 calculates the travel time between the stations (S53). The transfer time between stations is calculated from timetable information received from the traffic information DB 23. In step S52, when the route estimation unit 12 determines that the nearest stations of the departure point and the arrival point are the same, the travel time between the stations is calculated as “0” (S54).

  Next, after the travel time between stations is calculated, the travel time from the departure point and the arrival point to each nearest station is calculated (S55). In this case, the moving means calculates the moving time on foot or by bicycle. Next, the route estimation unit 12 calculates the total travel time by adding the travel time between the stations and the travel time from the departure point and the arrival point to each nearest station (S56).

  Next, a detailed processing flow of the sixth route search will be described with reference to FIG. First, the route estimation unit 12 searches for the nearest bus stop of the departure point and the arrival point from the map information received from the position information acquisition unit 11 (S61). Next, the route estimation unit 12 determines whether or not the nearest bus stops at the departure point and the arrival point are the same (S62). Next, when it is determined that the nearest bus stops at the departure point and the arrival point are different, the route estimation unit 12 determines whether there is a train station on the bus route (S63). Here, when there are a plurality of train stations in one bus route, the nearest train station is selected from the nearest bus stop. When it is determined that there is a train station on the bus route, the route estimation unit 12 calculates the travel time by bus from the bus stop to the train station and the travel time by train between the train stations (S64). In step S63, when it is determined that there is no train station on the bus route, the route estimation unit 12 calculates the travel time between the bus stops (S65). If the route estimation unit 12 determines in step S62 that the nearest bus stops at the departure point and the arrival point are the same, the route estimation unit 12 calculates the travel time between the bus stops as 0 (S66). Next, after the transfer time between bus stops is calculated, the route estimation unit 12 calculates the travel time from the departure point and the arrival point to the bus stop (S67). Next, the route estimation unit 12 calculates the total travel time by adding the travel time between the bus stops and the travel time to the bus stop (S68).

  Also, as shown in FIG. 11, the user may select a moving means that is normally used in advance, and the route search of FIG. 8 may not be performed for a moving means that is not normally used.

  As described above, by using the sensing system according to the first embodiment of the present invention, the movement route is estimated from the position information and time information acquired at relatively long time intervals. Thereby, in the mobile communication device, an increase in power consumption accompanying an increase in the number of times position information is acquired can be suppressed. Further, when generating the trajectory information, the movement route and the sensor information are associated with each other using the time information at which the sensor information is acquired. Thereby, since it is not necessary to acquire position information according to sensor information acquisition, the number of times of position information acquisition can be further reduced.

(Embodiment 2)
Next, a flow of position information acquisition processing according to the second exemplary embodiment of the present invention will be described with reference to FIG. First, the sensing unit 54 determines whether or not the user holding the mobile communication device 50 has started moving (S71). The determination whether or not the movement has started may be performed as follows, for example. The control unit 51 calculates step count information based on the acceleration information detected by the acceleration sensor. The control unit 51 determines whether or not the step count information is increasing at every predetermined interval. The control unit 51 may determine that the movement has started when the number of steps exceeds a predetermined threshold. When it is determined that the movement has not started, the control unit 51 repeats the process of step S71. When it is determined that the movement has started, the control unit 51 performs GPS positioning (S72). Next, the control unit 51 receives current time information from the timer unit 55 (S73).

  Next, the control unit 51 determines whether or not the user holding the mobile communication device 50 has stopped moving (S74). The determination whether or not the movement is stopped may be performed as follows, for example. The control unit 51 calculates the step count information based on the acceleration information detected by the acceleration sensor. The control unit 51 determines whether or not the step count information is increasing at every predetermined interval. The control unit 51 may determine that the movement is stopped when the number of steps does not exceed a predetermined threshold. When it is determined that the movement is not stopped, the control unit 51 repeats the process of step S74. When it is determined that the movement is stopped, the control unit 51 performs GPS positioning (S75). Next, the control unit 51 receives current time information from the timer unit 55 (S76).

  Next, the control unit 51 combines the calculated latitude and longitude information with the time information and outputs the information from the wireless communication unit 57 to the information server 20 via the public communication network (S77). Each time the GPS positioning is performed, the control unit 51 may link the calculated latitude and longitude information with the time information and output the information to the information server 20, and after performing the GPS positioning a plurality of times. Collectively, the calculated latitude and longitude information and the time information may be combined and output to the information server 20.

  Next, a detailed flow of the movement start / stop process according to the second embodiment of the present invention will be described with reference to FIG. First, the control unit 51 stores the current step count data in the memory A (S81). Here, the memory A is a memory area provided in the memory unit 58. The same applies to the memory B and the memory C described later.

  Next, the control unit 51 determines whether or not a predetermined interval has passed in order to collect the step count data (S82). When it is determined that the predetermined interval has not passed, the control unit 51 repeats the process of step S82. When determining that the predetermined interval has passed, the control unit 51 stores the current step count data in the memory B (S83).

  Next, the control unit 51 compares the step count data in the memories A and B to determine whether or not the step count has increased (S84). When determining that the number of steps has increased, the control unit 51 further determines whether or not a predetermined interval has passed (S85). When it is determined that the predetermined interval has not passed, the control unit 51 repeats the process of step S85. When it is determined that the predetermined interval has passed, the control unit 51 stores the current step count data in the memory C (S86).

  Next, the control unit 51 compares the step count data in the memory B and the memory C to determine whether or not the step count has increased (S87). Here, the control unit 51 may compare the step count data in the memory A and the memory C and determine whether or not the step count is increasing. When comparing the step count data in the memory A and the memory C, it may be determined whether or not the step count data has increased more than the increase in the step count in step S84.

  When it is determined that the number of steps has not increased, the control unit 51 returns to the process of step S82. When it is determined that the number of steps is increasing, the control unit 51 determines that the user holding the mobile communication device 50 has started moving or has continued moving (S88).

  That is, if it is determined that the movement is started or the movement is continued before the process of step S81 is started, it is determined in step S88 that the movement is continued. If it is determined that the movement has not been performed or the movement has been stopped before the process of step S81 is started, it is determined in step S88 that the movement has started.

  In step S84, when it is determined that the number of steps has not increased, the control unit 51 determines whether or not a predetermined interval has passed (S89). When it is determined that the predetermined interval has not passed, the control unit 51 repeats the process of step S89. When determining that the predetermined interval has passed, the control unit 51 stores the current step count data in the memory B (S90). In this case, the control unit 51 may delete the step count data already stored in the memory B.

  Next, the control unit 51 compares the step count data in the memory A and the memory B to determine whether or not the step count has increased (S91). When it is determined that the number of steps is increasing, the control unit 51 performs the process of step S85. When it is determined that the number of steps has not increased, the control unit 51 determines that the user holding the mobile communication device 50 has stopped moving or has not moved.

  That is, if it is determined that the movement is started or the movement is continued before the process of step S81 is started, it is determined in step S92 that the movement is stopped. If it is determined that the movement has not been performed or the movement has been stopped before the process of step S81 is started, it is determined in step S92 that the movement has not been performed.

(Embodiment 3)
Next, the flow of position information acquisition processing according to the third embodiment of the present invention will be described using FIG. First, the control unit 51 estimates the moving means of the user holding the mobile communication device 50 (S101). The movement means is estimated based on acceleration information acquired by the acceleration sensor of the sensing unit 54. The moving means estimation using the acceleration information includes a method of analyzing the frequency of acceleration and estimating it by its power spectrum. For example, the moving means is determined based on the difference in power spectrum waveform caused by the difference in moving means. The difference in the waveform of the power spectrum is the intensity of the power spectrum, the amount of change in the waveform of the power spectrum, and the like. However, the estimation method of the moving means is not limited to the above method.

  Next, the processing from step S102 to step S104 is the same as step S11 to step S13 in FIG. Next, the control unit 51 determines whether the moving means of the user holding the mobile communication device 50 has been changed (S105). The control part 51 estimates the present moving means using acceleration information similarly to step S101. When the current moving means is different from the previously estimated moving means, the control unit 51 determines that the moving means of the user holding the mobile communication device 50 has been changed. When the current moving means is the same as the previously estimated moving means, the control unit 51 determines that the moving means of the user holding the mobile communication device 50 has not been changed.

  When it is determined that the moving means has been changed, the control unit 51 returns to the process of step S102 and performs GPS positioning. When it is determined that the moving means has not been changed, the control unit 51 determines whether there is an instruction to stop GPS positioning by a user operation or the like (S106). When it is determined that there is no GPS positioning stop instruction, the control unit 51 returns to the process of step S75 and determines whether or not the moving means has been changed. When it is determined that there is an instruction to stop GPS positioning, the control unit 51 stops the process.

  As described above, when the process according to the third embodiment of the present invention is executed, the position information is acquired at the timing when the moving unit is changed. Thereby, compared with the process which acquires position information continuously, since the frequency | count of acquiring position information can be decreased, the increase in the power consumption accompanying a position information acquisition process can be prevented.

(Embodiment 4)
Next, the flow of the trajectory information generation process according to the fourth embodiment of the present invention will be described with reference to FIG. First, the mobile communication device 50 transmits position information to the information server 20 (S111). Any of the timings described in the first to third embodiments is used as the position information collection timing and the like. Next, the mobile communication device 50 acquires various sensor information in the sensor information acquisition unit 13 (S112). Moreover, when the information server 20 receives the position information, the information server 20 estimates the movement route of the user holding the mobile communication device 50 (S113). Since the route estimation method in the information server 20 is the same as in the first to third embodiments, detailed description thereof is omitted. Next, the information server 20 transmits the estimated movement route information to the mobile communication device 50 (S114). Next, the mobile communication device 50 generates trajectory information by combining the received travel route information and the sensor information collected in step S112 (S115). Since the generation of the trajectory information in the mobile communication device 50 is the same as the trajectory information generation process in the information server 20 described in the first to third embodiments, detailed description thereof is omitted. Next, the mobile communication device 50 outputs and displays the generated trajectory information on the display unit or the like of the mobile communication device 50 (S116).

  As described above, by using the sensing system according to the fourth embodiment of the present invention, the mobile communication device 50 transmits the personal information such as sensor information to the information server 20 without transmitting personal information. Information associated with the trajectory information can be generated.

  Note that the present invention is not limited to the above-described embodiment, and can be changed as appropriate without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 10 Information server 20 Information server 11 Position information acquisition part 12 Path | route estimation part 13 Sensor information acquisition part 14 Trajectory information generation part 21 Data communication part 22 Map information DB
23 Traffic Information DB
DESCRIPTION OF SYMBOLS 50 Mobile communication apparatus 51 Control part 52 GPS receiving part 53 Display part 54 Sensing part 55 Timer part 56 Operation part 57 Wireless communication part 58 Memory part 59 Telephone part

Claims (10)

Position information acquisition means for acquiring position information of the mobile communication device at least at two points in accordance with movement of the mobile communication device;
Route estimation means for estimating a movement route between the at least two points using the position information and the timing information obtained from the position information;
Sensor information acquisition means for acquiring sensor information while acquiring the position information of at least two points;
The sensor information acquisition timing is used to estimate the acquisition position of the sensor information on the estimated travel route, and the trajectory information of the mobile communication device combining the sensor information and the estimated travel route is obtained. A trajectory information generating means for generating a sensing system. Movement information determination means for determining movement start and movement stop of the mobile communication device,
The position information acquisition means includes
The sensing system according to claim 1, wherein the movement information determination unit acquires position information of the mobile communication apparatus at a timing when the mobile communication apparatus is determined to start and stop moving. The sensor information acquisition means includes
Acceleration information is acquired using an acceleration sensor,
The movement information determination means includes
In the step information generated using the acceleration information, when the step information is larger than a predetermined number of steps, it is determined that the mobile communication device has started moving, and the step information is determined in advance. The sensing system according to claim 2, wherein the mobile communication device is determined to have stopped when the number of steps taken is smaller. A moving means estimating means for estimating a moving means of the mobile communication device using the acceleration information;
The route estimation means includes
The movement path between the at least two points is estimated using the position information, timing information obtained from the position information, and the movement means estimated by the movement means estimation means. Sensing system. The position information acquisition means includes
The sensing system according to claim 4, wherein the position information is acquired at a timing when a change of the moving means is detected by the moving means estimating means. A position information acquisition unit that acquires position information of the mobile communication device at least at two points from the mobile communication device in accordance with movement of the mobile communication device;
A path estimation unit that estimates a movement path between the at least two points using the position information and timing information at which the position information is measured in the mobile communication device;
A sensor information acquisition unit that acquires sensor information detected during positioning of the position information of at least two points from the mobile communication device;
Using the timing at which the sensor information is detected, the detection position of the sensor information on the estimated travel route is estimated, and the trajectory of the mobile communication device that combines the sensor information and the estimated travel route An information server comprising: a trajectory information generation unit that generates information. A mobile communication device,
A position information receiving unit for positioning position information at at least two points according to the movement of the mobile communication device;
A sensor information detector for detecting sensor information while acquiring the position information of at least two points;
In order to estimate the movement path of the mobile communication device in the information server, the position information and timing information obtained by positioning the position information are transmitted to the information server, and further, the sensor information is placed on the estimated movement path. A communication unit comprising: a communication unit that transmits the sensor information and timing information at which the sensor information is detected to the information server in order to generate trajectory information that is mapped to the information server. A movement information determination unit for determining movement start and movement stop of the mobile communication device,
The location information receiving unit
The mobile communication device according to claim 7, wherein the movement information determination unit acquires position information at a timing determined as movement start and movement stop. A moving means estimating section for estimating moving means using acceleration information detected by the sensor information detecting section;
The location information receiving unit
The mobile communication device according to claim 7, wherein the position information is acquired at a timing when a change of the moving unit is detected by the moving unit estimation unit. In accordance with the movement of the mobile communication device, position information of the mobile communication device at at least two points is acquired from the mobile communication device,
Using the position information and timing information at which the position information is measured in the mobile communication device, estimating a movement path between the at least two points;
Obtaining sensor information detected during positioning of the position information of at least two points from the mobile communication device;
Using the timing at which the sensor information is detected, the detection position of the sensor information on the estimated travel route is estimated, and the trajectory of the mobile communication device that combines the sensor information and the estimated travel route A trajectory information generation method for generating information.

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