JP6871816B2 - Take-out detection device and mobile terminal device - Google Patents

Description

The present invention relates to a carry-out detection device and a mobile terminal device, and more particularly relates to a determination that the mobile terminal device has been taken out from a mobile means.

Various techniques are provided in which the current position of an object is detected by using GPS and the current position information of the detected object is used.
For example, in the technique described in Patent Document 1, the current position of the vehicle is detected, and it is determined that the vehicle has been stolen when the vehicle departs from the planned traveling route of the vehicle.
The technique described in Patent Document 1 is a case where an object having a position detection function by GPS is an automobile and the object itself moves. The position detection function installed in the automobile does not detect the position of the own vehicle by GPS alone, but detects the position of the own vehicle with high accuracy by correcting the steering angle and the mileage.

However, for example, when a mobile terminal device having a GPS function brought into the means of transportation is an object, which is separate from the means of transportation such as a train or a bus, it depends on the means of transportation itself like a vehicle. The measured value cannot be used, and it is necessary to specify the position by GPS measurement.
By the way, when the current position is detected by the signal received from GPS, a measurement error of the satellite signal occurs depending on the surrounding environment such as the weather and the existence of a building, and in a large case, it may be in units of several kilometers.
For this reason, it is conceivable to set a predetermined distance from the planned movement route as the permissible error range as in the prior art, but it is necessary to increase the permissible error range, and the mobile terminal device is actually taken out of the means of transportation. It is not possible to accurately detect whether or not it is.

Japanese Unexamined Patent Publication No. 61-150853

An object of the present invention is to detect with higher accuracy that a mobile terminal device brought into a moving means deviates from the moving route of the moving means and is taken out from the moving means.

(1) The invention according to claim 1 is a carry-out detection device that detects that a mobile terminal device brought into a moving means traveling on a predetermined traveling route has been taken out from the moving means. The reference point acquisition means for acquiring a plurality of reference points set in the travel route of the moving means brought into the mobile terminal device, and the positioning position P detected by the mobile terminal device by the received signal from the GPS satellite are acquired. The positioning position acquisition means to be performed, the reference point specifying means for specifying the reference point Rm closest to the positioning position P and the reference point Rs closest to the positioning position P corresponding to the acquired positioning position P, and the acquired positioning position P. A distance calculating means for calculating the distance d from the corresponding positioning position P to the straight line passing through both of the specified reference points, and an average for calculating the average distance D of each distance d corresponding to the plurality of acquired positioning positions. It is characterized by including a distance calculating means and a carry-out determining means for determining that the mobile terminal device has been taken out from the moving means when the calculated average distance D is larger than a predetermined threshold value. To provide a carry-out detection device.
(2) In the invention according to claim 2, the filtering means for determining whether or not the acquired positioning position P is appropriate, the reference point specifying means, and the distance calculating means are determined to be appropriate by the filtering means. The carry-out detection device according to claim 1, wherein the reference points Rm and Rs are specified and the distance d is calculated for the determined positioning position P.
(3) The invention according to claim 3, wherein the reference point acquisition means acquires a plurality of reference points set in a travel route of a train or a bus traveling on a railroad track. 1. The carry-out detection device according to claim 2 is provided.
(4) The carry-out according to claim 1, claim 2 or claim 3, wherein in the invention according to claim 4, the reference point acquisition means acquires a preset reference point. A detection device is provided.
(5) The invention according to claim 5, wherein the reference point acquisition means acquires a travel route and acquires a reference point by setting a reference point on the travel route. , The take-out detection device according to claim 2 or 3.
(6) The invention according to claim 6 is characterized in that the average distance calculating means calculates an average distance D of each distance d corresponding to a predetermined number of previous positioning positions P from the latest positioning position P. The take-out detection device according to any one of claims 1 to 5 is provided.
(7) The invention according to claim 7, wherein the average distance calculating means calculates an average distance D of all distances d corresponding to all positioning positions P, from claim 1 to claim 7. The carry-out detection device according to claim of any one of 5 is provided.
(8) The invention according to claim 8 includes the positioning position detecting means for detecting the positioning position P by the received signal from the GPS satellite and the carry-out detection device according to claim 1, and the positioning position acquisition means. Provides a portable terminal device characterized in that the positioning position P detected by the positioning position detecting means is acquired.

According to the present invention, a mobile terminal device brought into a moving means by using an average distance D obtained by averaging the distances d to a straight line passing through two reference points close to the current position P detected by a signal received from a GPS satellite. However, it is possible to detect with higher accuracy that the vehicle has deviated from the travel route of the transportation means and has been taken out of the transportation means.

It is explanatory drawing which showed the relationship of the reference point, the positioning position, and the distance d on the traveling route used in the carry-out determination of this embodiment. It is explanatory drawing which showed the structure of the carry-out detection device, and the whole take-out detection system including the portable terminal device. It is a flowchart which showed the carry-out determination process. It is explanatory drawing about the polygonal region which becomes the threshold value in the filtering by the polygonal region. It is a flowchart of the carry-out determination. It is explanatory drawing about α distance dn used in carry-out determination. It is explanatory drawing which showed the structure of the mobile terminal apparatus and the whole system in 2nd Embodiment. It is explanatory drawing about the distance dn used in the modification of the carry-out determination.

(1) Outline of the Embodiment The carry-out detection device of the present embodiment is brought into a vehicle operating on a specific route such as a train, a fixed-route bus, a high-speed bus, and a truck whose business is delivery to a convenience store. , Confirming ticketing information, boarding information, delivery information, etc. Detects that a mobile terminal device has been taken out.
As shown in FIG. 1A, the carry-out detection device acquires a plurality of reference points R1, R2, ... Set on the travel route 9 of the vehicle in which the mobile terminal device to be detected is brought in.
Then, the carry-out detection device acquires the positioning positions (P1, P2, P3 ...) Detected by the mobile terminal device brought into the vehicle by the received signal from the GPS satellite at predetermined time intervals (for example, 1 minute intervals). To do.
The carry-out detection device calculates the distance dn from the acquired positioning position Pn to the nearest reference point Rm and the line segment passing through the second closest reference point Rs. For example, in the case of the positioning position P2, the distance d2 to the straight line passing through the reference point R2 and the reference point R3 is calculated.
The take-out detection device calculates an average distance D of a predetermined number of distances dn corresponding to each positioning position Pn, and when this exceeds a predetermined threshold value, the mobile terminal device has been stolen (taken out of the vehicle). Judged as).

In the present embodiment, even if there is an erroneous detection in which the positioning position is a point far away from the actual mobile terminal device as in the positioning position P3 shown in FIG. 1 (a), the average distance D is used for carrying. Since it is determined whether or not the terminal device has been taken out, it is possible to avoid erroneous detection that the portable terminal device has been stolen.
On the other hand, as shown in FIG. 1B, when the mobile terminal device is actually stolen, the positioning positions P4', P5', ... After the positioning position P3 are separated from the traveling route 9 of the vehicle. When the average distance D becomes large and the threshold value is exceeded, it can be accurately determined that the theft has occurred.

When the carry-out detection device determines that the mobile terminal device has been taken out, the carry-out detection device notifies the device in the vehicle, the output unit of the mobile terminal device, and the mobile terminal device to that effect. By this notification, the user of the terminal device of the vehicle or the like can recognize that the portable terminal device has been taken out. Further, when the carry-out detection device notifies that the mobile terminal device has been taken out, for example, by outputting a warning sound, the mobile terminal device can be prevented from moving further away, and the carried-out mobile terminal device can be carried out. The current position (existing position) of the terminal device 3 can be confirmed.

(2) Details of the Embodiment FIG. 2 shows the entire export detection system including the export detection device according to the present embodiment.
As shown in FIG. 2, the take-out detection system includes a GPS satellite 1, a vehicle 2, a mobile terminal device 3, and a central command center 4.

The GPS satellite 1 is a satellite constituting a satellite positioning system, and each of a plurality of satellites transmits a signal including time information necessary for specifying an absolute position (latitude, longitude) on the ground.
The vehicle 2 corresponds to a means of transportation such as a train or a bus traveling on a predetermined route, and is a detection target of whether or not various mobile terminal devices 3 brought into the vehicle 2 have been taken out of the vehicle 2. .. Hereinafter, in the present embodiment, the case where the mobile terminal device 3 is taken out of the vehicle 2 will be described as being due to theft.

The mobile terminal device 3 has a function of performing various processes such as confirmation of ticketing information and boarding information, ticketing processing, and baggage delivery management of trains, buses, delivery trucks, etc. to which the mobile terminal device 3 is brought. The mobile terminal device 3 is a portable device brought into the vehicle 2, which is a detection target for whether or not the device has been stolen, and includes a GPS positioning device 31 and a data communication device 32.
The GPS positioning device 31 detects the positioning position (current position at the time of positioning) Pn of the mobile terminal device 3 by receiving signals from a plurality of GPS satellites 1. The GPS positioning device 31 detects the positioning position Pn at a predetermined time (every n minutes, for example, every 1 minute).
The position information (positioning position Pn) detected by the GPS positioning device 31 is generally obtained from latitude and longitude information, but may be a value obtained by converting this into length information. Any information that determines the position on the earth will do.
Various systems are provided as the satellite positioning system, and any of them may be provided.

The data communication device 32 transmits the positioning position Pn of the mobile terminal device 3 detected by the GPS positioning device 31 to the central command center 4.
Since it is arranged in the mobile terminal device 3, the data communication device 32 transmits the positioning position Pn by various wireless communications used. The data communication device 32 according to the present embodiment directly transmits the positioning position Pn to the central command center 4 by wireless communication, and for example, wireless communication is performed to a communication device arranged in the vehicle 2 (moving means) brought in. The data may be transmitted to the central command center 4 via the communication device of the vehicle 2.
Further, the data communication device 32 may be connected to the data communication device such as the vehicle 2 by wire to transmit the positioning position Pn by wire.

The central command center 4 functions as a carry-out detection device of the present embodiment, and includes a data communication device 41, a first storage unit 42, a control unit 43, and a second storage unit 44.
The data communication device 41 communicates with the data communication device 32 of the mobile terminal device 3 and receives the positioning position Pn of the mobile terminal device 3 which is sequentially transmitted.

The first storage unit 42 is composed of a temporary storage device such as a RAM, and a positioning position storage unit 421 and a distance storage unit 422 for storing data as various work areas are secured for each mobile terminal device 3. It has become.
Of the positioning position Pn of the mobile terminal device 3 received by the data communication device 41, the positioning position Pn determined to be effective by the filtering process described later is temporarily stored in the positioning position storage unit 421 in the order of reception. Will be done.
The distance storage unit 422 stores the distance dn (described later) calculated in response to each received positioning position Pn.

On the other hand, the second storage unit 44 is composed of a non-volatile memory such as a flash memory or a magnetic storage device, and includes a reference point storage unit 441 and a threshold storage unit 442.
The reference point storage unit 441 stores reference points Rn (n = 1, 2, ...) Representing the traveling route of each moving means (each vehicle 2 in the present embodiment). This traveling route is a curve passing through the center of the track on which the vehicle 2 travels, and each reference point is arranged at a predetermined interval on the traveling route, but in a section where the traveling route is close to a straight line, the interval between the reference points is widely arranged. You may try to do it. As a result, the number of target reference points can be reduced. On the other hand, in the section where the radius of curvature of the traveling route is small, they are arranged at relatively short intervals. Since the travel route has a finite length, the reference point is also a finite number of coordinate value sequences. The reference point storage unit 441 stores the coordinate value strings arranged on these travel routes for each travel route.
The reference point Rn to be stored in the reference point storage unit 441 may be acquired and stored from the outside, or may be set and acquired by the own device. In the case of acquiring from the outside, the external device sets the reference point Rn for the traveling route in advance, and the reference point Rn is acquired from the external device. On the other hand, in the case of setting and acquiring by the own device, it is a case where the traveling route is acquired from the external device and the reference point is arranged in the own device with respect to the acquired traveling route.
In this embodiment, the equation of a straight line passing through the two reference points may be stored in the reference point storage unit 441 in advance for each reference point. As a result, the amount of data increases, but the linear calculation load can be reduced.

The threshold storage unit 442 stores thresholds for performing various determinations (including data for specifying the thresholds), thresholds Tf1 to Tf3 used in the filtering process, and thresholds Th for performing carry-out determination. There is.
The details of the filtering thresholds Tf1 to Tf3 will be described later, but the threshold value Tf1 is a threshold value related to altitude. Since the altitude of the travel route 9 is known in advance, the altitude lower than the minimum altitude of the travel route by a predetermined distance is set as the minimum altitude threshold Tf11, and the altitude higher than the maximum altitude by a predetermined distance is set as the maximum altitude threshold Tf12. It is saved every time.
The threshold value Tf2 stores a distance value for setting the polygonal region in filtering by the polygonal region.
The threshold value Tf3 is a threshold value related to the speed, and the maximum value of the speed is stored.

On the other hand, the threshold value Th for performing the carry-out determination is the distance (for example, Th = 1 km) for determining whether the mobile terminal device 3 has been taken out from the average distance D calculated by the average distance calculation unit 434. It is saved as.

The control unit 43 includes a filtering unit 431, a neighborhood point search unit 432, a distance calculation unit 433, an average distance calculation unit 434, and a carry-out determination unit 435.
The control unit 43 is composed of a computer system including a CPU and a storage unit, and the CPU executes a carry-out determination processing program stored in the storage unit to execute a filtering unit 431, a neighborhood point search unit 432, and a distance calculation. Each function of the unit 433, the average distance calculation unit 434, and the carry-out determination unit 435 is realized. The take-out determination processing program may be stored in the second storage unit 44.

The filtering unit 431 uses the threshold values Tf1 to Tf3 for filtering stored in the threshold value storage unit 442 to determine whether or not the acquired positioning position Pn of the mobile terminal device 3 is valid, and filters by altitude and by polygonal area. , Judgment by speed filtering.

The neighborhood point search unit 432 corresponds to the positioning position Pn of the mobile terminal device 3 determined to be valid, which is sequentially stored in the positioning position storage unit 421, and the reference point Rm closest to the positioning position Pn and the next Search for the reference point Rs close to. Specifically, the distances Cn between the positioning position Pn and all the reference points R1, R2, ... Are calculated, and the minimum distance and the next reference point are set as the reference point Rm and the reference point Rs, respectively.
Here, the distance Cn from the positioning position Pn to the reference point Rn is geometrically calculated from the coordinate values Pn (xp, yp) and Rn (xr, yr) of both points.

The neighborhood point search unit 432 may narrow down the range of the reference point in consideration of the limiting condition based on the current state. For example, a reference point before the previously used reference point will not pass in the future, so it is excluded from the target, and considering the speed of the means of transportation, a reference point separated by a certain distance or more in the traveling direction still passes. Since there is nothing to do, it is excluded.
Specifically, a reference point before a predetermined number of reference points Rm detected with respect to the positioning position P (n-1) before the target positioning position Pn, or a reference point before the reference point p before the target positioning position Pn, or By excluding the reference points after a predetermined number q (q ≧ p) from the reference points Rs from the judgment target, the load due to the distance calculation can be reduced.

The distance calculation unit 433 describes the distance dn from the positioning position Pn to the straight line passing through the reference point Rm and the reference point Rs (the length dn of the perpendicular line drawn from the positioning position Pn to the straight line passing through the reference points Rm and Rs, FIG. See).
Regarding the distance dn, the distance calculation unit 433 geometrically obtains the coordinate values Pn (xp, yp), Rm (xm, ym), and Rs (xs, ys) of the positioning position Pn, the reference point Rm, and the reference point Rs. calculate.
At this time, if the equation of the straight line passing through the two reference points Rm and the reference point Rs is stored in the reference point storage unit 441 in advance, the distance calculation unit 433 uses the equation to move the distance corresponding to the positioning position Pn. Calculate dn.
When the distance calculation unit 433 calculates the distance dn with respect to the positioning position Pn, the calculated distance dn is sequentially associated with the positioning position Pn and stored in the distance storage unit 422.

When the distance dn calculated by the distance calculation unit 433 is α or more, the average distance calculation unit 434 is the average value (average) of the distance d (n−α + 1) calculated α before the distance dn calculated last. The distance D) is calculated according to the following equation (1). In the equation (1), the addition range of Σ is (n−α + 1) to n.
D = (Σdn) / α ... Equation (1)
In the present embodiment, the average value D of the distance d corresponding to the latest α positioning positions P is calculated, but the positioning position P existing within a predetermined distance Zm from the latest positioning position Pn is targeted. As a result, the average value of the distance d corresponding to the positioning position P may be calculated.

The take-out determination unit 435 compares the average distance obtained by the average distance calculation unit 434 with the take-out determination threshold Th stored in the threshold storage unit 442, and deviates from the route when it is determined that the average distance is larger than the threshold value. Outputs the signal that is assumed to have been done.
This output signal is used to sound an alarm in the central command center 4 and to send an emergency notification to the outside.

The operation of the carry-out determination process by the central command center 4 (take-out detection device) configured in this way will be described.
FIG. 3 is a flowchart showing the carry-out determination process.
As described above, the take-out determination process is performed by the CPU of the control unit 43 executing the take-out determination process program to function as each unit of the filtering units 431 to the take-out determination unit 435.

First, the control unit 43 monitors whether or not the positioning position Pn is received from the mobile terminal device 3 via the data communication device 41 (step 10).
When the positioning position Pn is received (step 10; Y), the control unit 43 stores the received positioning position Pn in the positioning position storage unit 421 (step 20).

Next, the control unit 43 performs a filtering process on the saved positioning position Pn (step 30).
This filtering process depends on whether or not the received positioning position Pn indicates a position that is impossible when the vehicle 2 moves on the traveling route 9 on the premise that the mobile terminal device 3 is brought into the vehicle 2. This is a process for excluding unnecessary data (positioning position) from the handling of the take-out judgment.
That is, by determining the case where the mobile terminal device 3 clearly calculates the incorrect positioning position and deleting the incorrect positioning position, the subsequent calculation processing load can be reduced and the unit time per unit time can be reduced. The number of carry-out determinations can be improved. It is also possible to improve the carry-out determination ability.

In this filtering process, in the control unit 43, the filtering unit 431 performs (a) filtering processing by altitude, (b) filtering processing by polygonal region, and (c) filtering processing by speed. Hereinafter, each filtering process will be described, but the order thereof is arbitrary and is not limited to the order described below.

(A) Altitude filtering processing The positioning position Pn received from the mobile terminal device 3 also includes altitude information Hn.
For example, if "20161013112017, 1, 2, +35.655528, +140.03972,64 <CR><LF>" is received as the positioning position information, <date and time>, <serial number>, in order from the front, It represents <state>, <latitude>, <longitude>, <altitude>, and <terminated character>.
Therefore, the control unit 43 acquires the altitude Hn of the received positioning position Pn (in the case of the above example, the altitude Hn = 64 m).
Further, the control unit 43 reads out the minimum altitude threshold value Tf11 and the maximum altitude threshold value Tf12 for each travel route 9 stored in advance in the reference point storage unit 441, and the altitude Hn of the acquired positioning position Pn is within both threshold values (Tf11 ≦). It is determined whether or not Hn ≦ Tf12).
When the altitude Hn of the received positioning position Pn is not within both threshold values, the control unit 43 determines that the positioning position Pn is not an appropriate measured value.

As described above, the reference point storage unit 441 of the present embodiment stores the minimum altitude threshold value Tf11 and the maximum altitude threshold value Tf12 of each traveling route in advance.
On the other hand, the subtraction value f11 and the addition value f12 (both distances) are stored, and the minimum altitude threshold Tf11 is calculated by subtracting the subtraction value f11 from the minimum altitude of each travel route, and the addition is added to the maximum altitude. The maximum altitude threshold Tf12 may be calculated by adding the value f12.

(B) Filtering process by polygon region FIG. 4 is an explanatory diagram of a polygon region which is a threshold value in filtering by a polygon region.
As shown in FIG. 4, each reference point provided on the traveling route (traveling path q) is designated as R1, R2, ... Rn-1, Rn.
On the other hand, the threshold storage unit 442 stores the distance δ (= Tf2) as data for defining the threshold value. The distance δ is a value larger than the threshold value Th for the carry-out determination in order to be consistent with the carry-out determination, and is defined as δ (m) = Th + u (u> 0).

When determining the polygonal region RA, the control unit 43 determines the reference point Ro1 (the southernmost reference point) having the smallest latitude value and the largest reference point Ro2 (the northernmost reference point) from each reference point. Then, the reference point Ra1 having the largest longitude (the easternmost reference point) and the reference point Ra2 having the smallest longitude (the westernmost reference point) are obtained.
In the example of FIG. 4, Ro1 = Rn-3, Ro2 = R5, Ra1 = Rn, Ra2 = R1.
Then, a straight line drawn in the east-west direction at the position Ro1A south of the southernmost reference point Ro1 (= Rn-3) by δ, and drawn in the east-west direction at the position Ro2A north of the northernmost reference point Ro2 (= R5) by δ. A straight line, a straight line drawn in the north-south direction at the position Ra1A east of the easternmost reference point Ra1 (= Rn) by δ, and a straight line drawn in the north-south direction at the position Ra2A west of the westernmost reference point Ra2 (R1) by δ. The enclosed area is referred to as a polygonal area RA.
When the acquired positioning position Pn is outside the polygonal region RA, the control unit 43 determines that the positioning position Pn is not an appropriate measured value.

Specifically, the control unit 43 has four conditions: the latitude of the positioning position Pn is equal to or greater than the latitude of the position Ro1A, equal to or less than the latitude of the position Ro2A, and the longitude of the positioning position Pn is equal to or greater than the longitude of the position Ra2A and equal to or less than the longitude of the position Ra1A. When the condition is satisfied, the positioning position Pn is determined to be an appropriate positioning position.

In the present embodiment, as shown in FIG. 4, a quadrangle including the entire traveling route 9 is defined as the polygonal region RA, but the amount of processing for determination is the minimum in this case, but it is limited to this. I can't.
For example, although the amount of processing increases, a quadrangular area may be defined for each part instead of the entire traveling route, and the judgment may be made for the area connecting them. The case where this area is defined in the most detail corresponds to the virtual area used in the deviation determination according to the present invention.
Further, not only the quadrilateral region but also a polygon having a pentagon or more may be applied to the whole or a part.

(C) Filtering process by speed The positioning position Pn received from the mobile terminal device 3 includes time information <date and time> together with position information as described in the filtering process by altitude.
Therefore, in this filtering process, the control unit 43 calculates the distance and travel time between both points from both the position information and the time information of the latest positioning position Pn and the previous positioning position Pn-1. Then, the average speed Ve between both positioning positions is obtained.
Then, the control unit 43 compares the obtained average velocity Ve with the threshold value Tf3 regarding the velocity stored in the threshold value storage unit 442, determines whether or not the condition 0 ≦ Ve ≦ Tf3 is satisfied, and if not satisfied. , It is determined that the positioning position Pn is not an appropriate measured value.

If the positioning position Px received immediately before the latest positioning position Pn is a positioning position determined to be inappropriate, the positioning position Px is determined to be inappropriate from the positioning position storage unit 421 by any filtering process. Will be deleted. Therefore, the positioning position Pn-1 used when calculating the average velocity Ve is a positioning position determined to be appropriate.

When it is determined by any of the above filtering processes that the positioning position Pn is not an appropriate measured value (step 40; Y), the control unit 43 stores the positioning in the positioning position storage unit 421 in step 20. The position Pn is discarded (deleted) (FIG. 3, step 50), and then the process returns to step 10 to continue the process.

On the other hand, when it is determined that the positioning position Pn is appropriate for all the filtering processes (step 40; N), the control unit 43 uses the positioning position Pn to make a carry-out determination for the mobile terminal device 3. (Step 60).
The details of this carry-out determination will be described later.

When the take-out determination is completed, the control unit 43 outputs the determination result (“inside the vehicle”, “take-out”) (step 70). As for the output of the determination result, for example, "inside the vehicle" or "take-out" is displayed on the screen of the display device as the current state, but in the case of "take-out", a warning sound may be further output. Good.
Further, as a result output in the case of "take-out", the data communication device 41 transmits the carry-out information indicating that the mobile terminal device 3 has been taken out to the control device of the vehicle 2 and the mobile terminal device 3. You may try to do so. The control device or mobile terminal device 3 of the vehicle 2 that has received this carry-out information can output a screen display or a warning sound to that effect. As a result, the occupants and related persons of the vehicle 2 can quickly respond to the "take-out" of the mobile terminal device 3, and can issue a warning to the person who brought out the mobile terminal device 3.
Then, the control unit 43 determines whether or not the determination result is "take-out" (step 80), and if it is "take-out" (step 80; Y), the target mobile terminal device 3 is carried from the vehicle 2. The process proceeds to the take-out process S85 as if it was taken out. The process may be terminated when it is determined that the vehicle does not exist in the vehicle 2.

As an example of the carry-out process (step S85), the positioning position Pn from the mobile terminal device 3 may be continuously received in order to confirm the situation after the mobile terminal device 3 is taken out.
The positioning position Pn after it is determined that it has been taken out can be sequentially plotted on the map information to determine the subsequent situation. For example, when a plurality of positioning positions are plotted within a predetermined area at almost the same position (for example, near a train stop or a highway bus stop), it can be determined that the positioning position has been left behind at the station or stop. ..
On the other hand, when the positioning position Pn is plotted so that the positioning position Pn gradually moves away from the traveling route 9 of the vehicle, it can be estimated that the positioning position Pn has been stolen.

In this way, by continuously receiving the positioning position Pn even after the carry-out determination, the location of the mobile terminal device 3 can be estimated, which can be useful for collection.
Further, by publicizing that the positioning position Pn is always transmitted from the mobile terminal device 3, there is an effect of suppressing the possibility of theft.

When it is determined that the result of the determination is not brought out but inside the vehicle 2 (step 80; N), the control unit 43 determines whether or not the vehicle has arrived at the end point (step 90).
Here, regarding the determination of the end point, the control unit 43 determines the end point when the reference point Rm closest to the positioning position Pn coincides with the last reference point of the traveling route 9 in the carry-out determination (described later) in step 60. Judge that you have arrived at.
The control unit 43 may make a determination by receiving a signal indicating that the mobile terminal device 3 has arrived at the end point from the vehicle 2 brought in.

If it is determined that the end point has not been reached (step 90; N), the control unit 43 returns to step 10 and monitors the reception of the next positioning position Pn transmitted from the mobile terminal device 3.
On the other hand, when it is determined that the terminal has arrived (step 90; Y), the control unit 43 ends the carry-out determination process. At the end of the carry-out determination process, the control unit 43 stores the data of the positioning position storage unit 421 and the distance storage unit 422 of the first storage unit 42 in response to the brought-in mobile terminal device 3. to erase.

FIG. 5 is a flowchart showing the details of the carry-out determination (step 60).
The control unit 43 acquires the latest positioning position Pn (step 61).
Then, the control unit 43 determines the closest reference point Rm and the second closest reference point Rs from the acquired positioning position Pn (step 62).
That is, the control unit 43 calculates the distance from the positioning position Pn to each reference point R1, R2, ... From the coordinate position, and sets the reference point with the smallest distance and the second reference point as reference points Rm, Rs, respectively. And.
In the example of FIG. 1, when the positioning position Pn = P2, the control unit 43 determines the closest reference point Rm = R2 and the second closest reference point Rs = R3.

Next, the control unit 43 calculates the distance dn from the positioning position Pn to the straight line passing through the two determined reference points Rm and Rs, and stores the distance dn in the distance storage unit 422 (step 63).
The control unit 43 determines whether or not the number of distance dns calculated so far is a predetermined number α or more (step 64).
If the number is less than α (step 64; N), the control unit 43 returns to the main routine (FIG. 3) with no determination (step 65), assuming that the number is less than the basic number α for calculating the average distance Dn. ..

On the other hand, when the number of distances dn is α or more (step 64; Y), the control unit 43 calculates the average distance Dn of α (step 66).
That is, the control unit 43 reads out α distances from the latest distance dn stored in the distance storage unit 422 to d (n−α + 1) retroactively, and according to the above equation (1), the average distance Dn. Is calculated.

Then, the control unit 43 determines whether or not the calculated average distance Dn is equal to or less than the threshold value Th (step 67). That is, the control unit 43 reads the threshold value Th for the carry-out determination from the threshold value storage unit 442, compares it with the calculated average distance Dn, and determines whether or not the average distance Dn ≦ the threshold value Th.
When the calculated average distance D is equal to or less than the threshold value Th (step 67; Y), the control unit 43 determines that the mobile terminal device 3 exists in the vehicle 2 (step 68), and returns to the main routine.
On the other hand, if the average distance D is larger than the threshold value Th (step 67; N), the control unit 43 determines that the mobile terminal 3 has been taken out of the vehicle, that is, has been taken out (step 69), and returns to the main routine. ..

FIG. 6 shows α distances dn used in the carry-out determination.
When the distance dn is calculated for the latest positioning position Pn for the traveling route 9, the distance d (n-1), ... For the previous positioning position P (n-1) is the first positioning position. It is sequentially calculated from P1 (not shown) and stored in the distance storage unit 422.
In the present embodiment, when α or more distances d are calculated from the distance d1 with respect to the first positioning position P1 (step 64; Y), a predetermined number of α distances d are averaged from the latest positioning position Pn. It is the target of value calculation.
In the present embodiment, α = 4, and in the example of FIG. 6, the average value of the four distances dn, d (n-1), d (n-2), and d (n-3) is taken as the average distance D. There is.

As described above, the mobile terminal device 3 in the present embodiment positions the current position at intervals of about 1 minute and transmits the positioning position Pn. Therefore, by setting α = 4, the mobile terminal device 3 can be moved from the vehicle 2. It is possible to make a judgment in almost real time by making a determination of taking out about 5 minutes after taking out.
For example, in the case of FIG. 1B, assuming that the vehicle is taken out from the vehicle 2 between the positioning positions P2 and the positioning position P3, and the latest positioning position is P5, the distances d5', d4', d3, d2 There is a high possibility that the threshold Th will be exceeded at the average distance D of the above, and in this case, the carry-out determination is made earlier.

The actual number α is determined in consideration of the amount of skipping of the positioning position (distance d of the positioning position in the case of erroneous positioning) and the frequency of skipping. Then, the value of α may be changed for each traveling route 9. In this case, an appropriate α is determined by repeating the test measurement in advance for each traveling route 9.
On the other hand, by reducing the number α, it is possible to determine the carry-out in a state closer to real time, but the average distance D is greatly affected by the amount of flight, so it is compared with the average distance D. It is necessary to greatly adjust the threshold value Th.
In any case, an appropriate number α and a threshold value Th are determined in relation to the demand for real-time performance and the accuracy of the carry-out determination.

As described above, according to the present embodiment, the positioning position Pn of the own device measured by the mobile terminal device 3 brought into the moving means (vehicle 2) is sequentially received, and from this positioning position Pn, the moving means of the moving means. An average distance D obtained by averaging the distance d (shortest distance) to the travel route 9 with respect to a plurality of positioning positions is calculated, and the mobile terminal device 3 determines whether or not the average distance D exceeds the threshold Th. I try to judge whether or not it was taken out of.
As a result, even if a large jump occurs in the acquired positioning position (coordinate value) of the mobile terminal device 3, if the frequency of occurrence is low, the influence on the take-out determination can be reduced, and the take-out determination can be made more accurately. It can be performed.

Further, a plurality of reference points are provided on a predetermined travel route of the moving means, two reference points Rm and Rs existing in the vicinity of the positioning position Pn are obtained, and a straight line passing through both reference points Rm and Rs and the positioning position. Since the distance dn from Pn is an approximate value of the distance from the traveling route to the positioning position Pn, the calculation load can be reduced.
Further, since the distance dn is calculated for each positioning position Pn, it is not necessary to process the reference point near the point where the current position of the mobile terminal device 3 has not been positioned. Therefore, since the amount of calculation is determined by the number of positioning positions, more reference points can be set. When the number of reference points is increased, the number of calculations for the distance d to each reference point increases when determining the reference points Rm and Rs, but this is a simple geometric calculation and does not result in a large increase in calculation. Even in this case, by targeting a predetermined number of reference points before and after the reference point Rm corresponding to the previous positioning position P (n-1) without calculating the distance d for all the reference points. The increase in geometric calculation can also be suppressed.

Next, the carry-out detection device according to the second embodiment will be described.
In the first embodiment described with reference to FIG. 2, the mobile terminal device 3 transmits the positioning position of the own device measured from the GPS signal to the central command center 4, and the central command center 4 receives the received positioning position and the mobile terminal device 3. The case where it is determined whether or not the mobile terminal device 3 has been taken out of the moving means has been described from the traveling route of the vehicle 2 (moving means) brought in.
That is, in the first embodiment, the central command center 4 determines whether or not the mobile terminal device 3 brought into the vehicle 2 has been taken out.
On the other hand, in the second embodiment, it is determined whether or not the mobile terminal device 3 itself brought into the vehicle 2 (moving means) has been taken out to the outside.

FIG. 7 shows the configuration of the mobile terminal device 5 according to the second embodiment.
Similar to the mobile terminal device 3 in the first embodiment, the mobile terminal device 5 has a function of being brought into a vehicle 2 constituting a transportation means to confirm boarding information and perform ticketing processing.
The mobile terminal device 5 includes a GPS positioning device 51, a first storage unit 52, a control unit 53, a second storage unit 54, and a data communication device 55.

The GPS positioning device 51 has the same function as the GPS positioning device 31 included in the mobile terminal device 3 in the first embodiment and its modified example, and receives a GPS signal from the GPS satellite 1 and is its own device approximately every minute. (Positioning position Pn) is positioned. In the GPS positioning device 51 of the present embodiment, the positioned positioning position Pn is stored in the positioning position storage unit 521 as it is, and is also subject to filtering processing by the filtering unit 531.

The first storage unit 52, the control unit 53, and the second storage unit 54 are the same as the first storage unit 42, the control unit 43, and the second storage unit 44 of the central command center 4 in the first embodiment and its modification. It is configured, and it is determined whether or not the mobile terminal device 5 has been taken out of the vehicle 2 in the same manner as in the first embodiment described with reference to FIGS. 3 to 5.
In FIG. 7, the code obtained by changing the uppermost number 5 of each code to 4 corresponds to each part of the first embodiment (excluding reference numerals 51 and 55).

The data communication device 55 is connected to the control unit 53, and when it is determined that the mobile terminal device 5 has been taken out of the vehicle 2, the control device of the vehicle 2 and the control device of the central command center (both). The carry-out information indicating that the mobile terminal device 5 has been taken out is transmitted to (not shown).

The determination of the carry-out by the mobile terminal device 5 configured in this way is performed in the same manner as in the first embodiment.

Although the present embodiment has been described above, the present invention is not limited to this embodiment, and various modifications can be made.
For example, in the described embodiment, the case where the number of target distances dn when calculating the average distance D from the distances dn corresponding to each positioning position Pn is α (see FIG. 6).
On the other hand, the control units 43 and 53 set the distance dn corresponding to all the positioning positions Pn (excluding those deleted by the filtering process) from the departure of the vehicle 2 to the end point of the travel route 9. The average distance D is calculated as the target.
FIG. 8 shows the distance d used in this modification.
As shown in FIG. 8, in the traveling route 9 of the vehicle 2, all distances d1 to dn from the distance d1 corresponding to the first positioning position P1 to the distance dn corresponding to the positioning position Pn immediately before the end point are used. Then, the average distance D = Σdi / n (addition range is i = 1 to n) is calculated.

According to this modification, the average distance D is calculated after the vehicle 2 has traveled on the entire traveling route, and it is determined whether or not the threshold Th is exceeded.
Therefore, in the carry-out determination process (corresponding to FIG. 3) of this modified example, the carry-out determination and the determination result output in steps 60 and 70 are performed after it is determined that the end point has been reached (step 90; Y). Step 80 is unnecessary.
Then, in the carry-out determination of FIG. 5, steps 64 and 65 related to the determination of α pieces are unnecessary, and the average distance D in step 66 is not α pieces but the total distance d.
However, in the modified example, the calculation of the distance dn in steps 61 to 63 may be performed (for each positioning position Pn) after the filtering process in step 30 as in the embodiment.

According to this modification, after the vehicle 2 arrives at the end point, by using the average value of a larger distance d, even if the positioning position Pn jumps, it can be taken out more accurately. Judgment can be made.

Further, in the first embodiment, the case where the central command center 4 exists outside the vehicle 2 has been described, but the central command center 4 or the vehicle terminal device equipped with all the functions thereof is provided in the vehicle 2. You may.

1 GPS satellite 2 Vehicles 3, 5 Mobile terminal equipment 9 Travel route 31 GPS positioning equipment 32 Data communication equipment 4 Central command center 41 Data communication equipment 42, 52 First storage unit 421, 521 Positioning position storage unit 422, 522 Distance storage unit 43, 53 Control unit 44, 54 Second storage unit 441, 541 Reference point storage unit 442, 542 Threshold storage unit 51 GPS positioning device 55 Data communication device

Claims (8)

It is a carry-out detection device that detects that a mobile terminal device brought into a moving means traveling on a predetermined traveling route has been taken out from the moving means.
A reference point acquisition means for acquiring a plurality of reference points set in the travel route of the transportation means brought into the mobile terminal device, and a reference point acquisition means.
A positioning position acquisition means for acquiring a positioning position P detected by the mobile terminal device based on a signal received from a GPS satellite, and a positioning position acquisition means.
A reference point specifying means for specifying the reference point Rm closest to the positioning position P and the reference point Rs next to the acquired positioning position P,
A distance calculation means for calculating the distance d from the positioning position P to the straight line passing through both of the specified reference points corresponding to the acquired positioning position P.
An average distance calculating means for calculating the average distance D of each distance d corresponding to the plurality of acquired positioning positions, and
When the calculated average distance D is larger than a predetermined threshold value, the carry-out determination means for determining that the mobile terminal device has been taken out from the moving means, and the carry-out determination means.
A carry-out detection device characterized by being equipped with. A filtering means for determining whether or not the acquired positioning position P is appropriate, and
The reference point specifying means and the distance calculating means specify reference points Rm and Rs for the positioning position P determined to be appropriate by the filtering means, and calculate the distance d.
The carry-out detection device according to claim 1. The reference point acquisition means acquires a plurality of reference points set on a travel route of a train or a bus traveling on a railroad track.
The carry-out detection device according to claim 1 or 2, wherein the carry-out detection device is characterized. The reference point acquisition means acquires a preset reference point.
The carry-out detection device according to claim 1, claim 2 or claim 3. The reference point acquisition means acquires a travel route and acquires a reference point by setting a reference point on the travel route.
The carry-out detection device according to claim 1, claim 2 or claim 3. The average distance calculating means calculates an average distance D of each distance d corresponding to a predetermined number of previous positioning positions P from the latest positioning position P.
The carry-out detection device according to any one of claims 1 to 5, wherein the carry-out detection device is characterized. The average distance calculating means calculates the average distance D of all the distances d corresponding to all the positioning positions P.
The carry-out detection device according to any one of claims 1 to 5, wherein the carry-out detection device is characterized. Positioning position detection means that detects positioning position P from signals received from GPS satellites, and
The carry-out detection device according to claim 1 and
With
The positioning position acquisition means acquires the positioning position P detected by the positioning position detecting means.
A mobile terminal device characterized by that.

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