JP2019158563A - Management device, management system, and position correction method - Google Patents

Abstract

To appropriately correct positional information in the case of an occurrence of a jump.SOLUTION: A jump judgment is made about whether or not a jump in which a value of more than a predetermined threshold value has occurred in one movement; a return judgment is made as to whether or not the return has occurred in the vicinity of a position immediately before the jump when a jump has occurred; the position of each time from the position immediately after the jump to the position of immediately before the return is corrected based on the position immediately before the jump when a return has occurred. In particular, when a jump has occurred, a cumulative movement distance after the jump is calculated by adding the distance of a subsequent movement; it is determined whether or not it is a good time to perform the return determination by comparing the cumulative movement distance with the distance of movement in the jump, and the return judgment is made.SELECTED DRAWING: Figure 12

Description

  The present invention relates to a management device and a management system that manage position information of a moving body, and a position correction method that corrects position information of a moving body.

  By collecting the position information of the terminal possessed by the person and performing various analyzes using the position information of the terminal, it is possible to output various analysis results relating to the behavior of the person, for example, the flow line of the person. . However, abnormal positioning information may be output because the terminal cannot properly receive a positioning signal. If a flow line is generated based on such abnormal positioning information, an area where a person cannot pass is displayed. Problems such as crossing the flow line occur, making it impossible to properly grasp the behavior of the person. Therefore, it is desirable to detect the positional information and correct the positional information when the positional information is abnormal.

  As a technique related to correction of such position information, conventionally, a technique for determining the accuracy of position information and correcting the position information based on position information at previous and subsequent times when the position information accuracy is low is known. (See Patent Document 1).

JP 2012-2111840 A

  Now, when the positioning signal cannot be properly received by the terminal, there may occur a phenomenon that the position suddenly flies far away. When this jump occurs, it may return to the vicinity of the position immediately before the jump, or may not return.When returning, the position after the jump occurs is assumed to be abnormal. The position before the occurrence is assumed to be abnormal. Even when returning to the vicinity of the position immediately before the flight, there are cases where the position returns immediately and gradually. For this reason, there has been a problem that even if the position information is uniformly corrected based on the position information of previous and subsequent times as in the prior art, appropriate correction cannot be performed.

  Therefore, the main object of the present invention is to provide a management apparatus, a management system, and a position correction method that can appropriately correct position information when a jump occurs.

  The management apparatus of the present invention is a management apparatus that manages position information of a moving body, and includes a storage unit that stores position information of each time of the moving body, and a control unit, and the control unit includes: A jump determination is made as to whether or not a jump in which the one-time movement distance of the position information is equal to or greater than a predetermined threshold value. If the jump occurs, the return to the vicinity of the position immediately before the jump is returned. When the return occurs, the position information at each time from the position immediately after the jump to the position immediately before the return is based on the position information of the position immediately before the jump. Correction.

  The management system of the present invention is a management system in which a management device manages position information of a moving body, and the management device includes a storage unit that stores position information of each time of the moving body, a control unit, The control unit performs a jump determination as to whether or not a jump in which the one-time moving distance of the position information is equal to or greater than a predetermined threshold value, and when the jump occurs, Perform a return determination as to whether or not a return has occurred near the position immediately before the jump, and if the return has occurred, position information at each time from the position immediately after the jump to the position immediately before the return, The correction is made based on the position information of the position immediately before the jump.

  Further, the position correction method of the present invention is a position correction method for correcting the accumulated position information of the moving body in the management device, wherein the one-time moving distance of the position information is a predetermined threshold value or more. When a jump occurs, a return determination is made as to whether or not a return to the vicinity of the position immediately before the jump has occurred, and when the return occurs. The position information at each time from the position immediately after the jump to the position immediately before the return is corrected based on the position information of the position immediately before the jump.

  According to the present invention, in addition to the jump determination regarding whether or not a jump has occurred, it is determined whether or not a return has occurred that occurs when positioning is restored from an abnormal state to a normal state, and a return has occurred. In addition, the position information from immediately after the flight to immediately before the return is corrected. For this reason, it is possible to appropriately correct the position information when a jump occurs.

Overall configuration diagram of a location information collection system according to this embodiment Explanatory drawing which shows the specific example of the flow line output as an analysis result from the server 4 Explanatory drawing showing the pattern of position change when jump occurs Block diagram showing schematic configuration of server 4 Explanatory drawing which shows the outline | summary of the jump determination performed in the position correction | amendment part 21 of the server 4 Explanatory drawing which shows the outline | summary of the return determination performed by the position correction | amendment part 21 of the server 4 Explanatory drawing which shows the specific example of return judgment Explanatory drawing which shows the outline | summary of the position correction performed in the position correction part 21 of the server 4 Explanatory drawing which shows the outline | summary of correction | amendment of the threshold value of the return determination performed in the position correction | amendment part 21 of the server 4 Flow chart showing operation procedure of user terminal 1 and server 4 at the time of transmission / reception of position information Flow chart showing operation procedure of server 4 and administrator terminal 5 at the time of flow line output The flowchart which shows the procedure of the process performed in the position correction | amendment part 21 of the server 4.

  A first invention made to solve the above-described problem is a management device that manages position information of a moving object, and includes a storage unit that accumulates position information of each time of the moving object, and a control unit. The control unit performs a jump determination as to whether or not a jump in which the one-time moving distance of the position information is equal to or greater than a predetermined threshold value has occurred, and if the jump occurs, A return determination is made as to whether or not a return to the vicinity of the immediately preceding position has occurred, and if the return has occurred, position information at each time from the position immediately after the jump to the position immediately before the return is stored in the position information. The correction is made based on the position information of the immediately preceding position.

  According to this, in addition to the jump determination regarding whether or not a jump has occurred, it is determined whether or not a return has occurred when positioning has recovered from an abnormal state to a normal state. The position information from immediately after the flight to just before the return is corrected. For this reason, it is possible to appropriately correct the position information when a jump occurs.

  According to a second aspect of the present invention, when the jump occurs, the control unit adds a subsequent movement distance to calculate a cumulative movement distance after the occurrence of the jump, and the cumulative movement distance and the jump occur. The movement distance is compared to determine whether it is the execution timing of the return determination, and when the return determination execution timing is reached, the return determination is performed.

  According to this, it is possible to accurately determine a return that occurs when positioning is restored from an abnormal state to a normal state.

  According to a third aspect of the present invention, the controller determines that the return has occurred when a distance between the position at the return determination execution timing and the position immediately before the jump is equal to or less than a predetermined threshold value. The configuration is as follows.

  According to this, it is possible to accurately determine the return.

  According to a fourth aspect of the present invention, the control unit sets the return determination threshold based on an elapsed time from immediately after the jump to an execution timing of the return determination.

  According to this, it is possible to accurately determine the return.

  Further, according to a fifth aspect of the present invention, the controller determines the return determination threshold obtained based on the elapsed time when the elapsed time is equal to or longer than a time corresponding to the jump determination threshold value. The value is corrected and reduced.

  According to this, useless correction can be avoided.

  Further, a sixth invention is a management system in which a management device manages position information of a moving body, the management device including a storage unit that stores position information of each time of the moving body, a control unit, And the control unit performs a jump determination on whether or not a jump has occurred in which the one-time moving distance of the position information is equal to or greater than a predetermined threshold value. A return determination is made as to whether or not a return to the vicinity of the immediately preceding position has occurred, and if the return has occurred, the position information at each time from the position immediately after the jump to the position immediately before the return is The correction is made based on the position information of the position immediately before the flight.

  According to this, as in the first invention, the position information can be appropriately corrected when a jump occurs.

  The seventh invention is a position correction method for correcting the accumulated position information of a moving body in a management device, wherein a jump in which the one-time moving distance of the position information is a predetermined threshold value or more occurs. When the jump occurs, a return determination is performed as to whether or not a return to the vicinity of the position immediately before the jump has occurred, and when the return occurs, The position information at each time from the position immediately after the jump to the position immediately before the return is corrected based on the position information of the position immediately before the jump.

  According to this, as in the first invention, the position information can be appropriately corrected when a jump occurs.

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

  FIG. 1 is an overall configuration diagram of a position information collection system according to the present embodiment.

  This location information collection system collects location information of a person staying in a building (target area) of a facility such as a factory, and includes a user terminal 1 (terminal device, mobile object), a beacon transmitter 2, An access point 3, a server 4 (management device), and an administrator terminal 5 are provided. Although an example of collecting position information using the beacon transmitter 2 and the access point 3 will be described here, the position information of the moving body may be stored in the server 4 using a known technique.

  The user terminal 1 communicates with the server 4 via the access point 3 and transmits a positioning result notification including a terminal ID (terminal identifier), position information, and positioning time to the server 4. The user terminal 1 may be configured as a device dedicated to collecting position information, and may install an application program for collecting position information on a mobile terminal such as a smartphone.

  The beacon transmitter 2 is installed in a building and transmits a beacon signal for positioning by Bluetooth (registered trademark) or the like. This beacon signal is received by the user terminal 1 and positioning based on the beacon signal is performed by the user terminal 1.

  The access point 3 is installed in a building and relays communication between the user terminal 1 and the server 4.

  The server 4 collects location information of users who stay in the building. The server 4 communicates with the user terminal 1 via the network and the access point 3, receives the positioning result notification transmitted from the user terminal 1, and receives information (terminal ID, position information) included in the positioning result notification. , Travel distance, positioning time, etc.) are stored in the own device. Even if the position information is not calculated by the user terminal 1, the information necessary for calculating the position information is transmitted to the server 4, and the position information is accumulated by calculating using the information received in the server 4. Good.

  Further, the server 4 communicates with the user terminal 1 to collect the user's position information. However, the method of storing the position information in the server 4 is not limited to this. Then, it may be stored in the server 4 from the outside. Alternatively, the server 4 may accumulate the position information of the mobile body by sequentially reading the RFID tag information included in the mobile body with an RFID reader installed on the route and transmitting the information to the server 4. Alternatively, the captured moving body may be identified by image recognition using an installed camera, and the identified moving body ID and camera position information may be acquired and stored.

  Further, the server 4 performs various analysis processes relating to user behavior, for example, a process of generating a flow line, based on the collected position information of the user terminal 1.

  The administrator terminal 5 is a PC or a tablet terminal, and is operated by the administrator. In the administrator terminal 5, the administrator can browse various analysis results provided from the server 4, for example, the flow lines of each person, by starting the browser and accessing the server 4.

  Next, the flow line output as an analysis result from the server 4 will be described. FIG. 2 is an explanatory diagram showing a specific example of a flow line.

  The user terminal 1 receives a beacon signal transmitted from the beacon transmitter 2 installed in the building, and acquires position information of the own device based on the radio wave intensity of the beacon signal.

  In such indoor positioning, positioning accuracy can be improved by installing a large number of beacon transmitters 2; It may become impossible to receive a beacon signal. In this case, by performing positioning based on the beacon signal of the beacon transmitter 2 that is far away, an abnormally separated position is output as a positioning result, and a jump phenomenon that the position suddenly flies far away occurs. There is.

  In the example shown in FIG. 2A, in a specific area, the flow line frequently reciprocates between a position where a person is actually assumed and a position far away from the position. In the example shown in FIG. 2B, the flow line is in a state of gradually returning to a normal position after jumping to a position far away from a position where a person is actually assumed.

  When such a jump occurs, when outputting a flow line connecting the positions of each time in time series, the accuracy of the flow line is lowered and it becomes difficult to grasp the movement of the person. Therefore, in this embodiment, in order to improve the accuracy of the flow line and improve the visibility of the flow line, the server 4 detects a jump from the accumulated position information and corrects the position information. Do.

  Next, a pattern of position change when a jump occurs will be described. FIG. 3 is an explanatory diagram showing a pattern of position change when a jump occurs.

  When a jump occurs, there are three patterns depending on the subsequent change in position.

  In the first pattern shown in FIG. 3A, after a jump occurs, it immediately returns to the vicinity of the position immediately before the jump. This first pattern occurs when the beacon signals of nearby beacon transmitters 2 can be received simultaneously as the user terminal 1 moves, and the position immediately after the occurrence of the jump is abnormal. Therefore, it is necessary to correct the position immediately after the jump occurs.

  In the second pattern shown in FIG. 3B, after a jump occurs, the pattern gradually returns toward the vicinity immediately before the jump. This second pattern occurs when the beacon signal of the nearby beacon transmitter 2 can be gradually received according to the movement of the user terminal 1, and the position immediately after the jump has occurred is abnormal. Therefore, it is necessary to correct the position in the period from the position immediately after the jump occurs to the vicinity of the position immediately before the jump.

  In the third pattern shown in FIG. 3C, after a jump occurs, it does not return to the vicinity of the position immediately before the jump. In the third pattern, it is assumed that the position after the jump is normal and the position before the jump is abnormal. This third pattern is excluded from the position correction target in the present embodiment.

  Next, a schematic configuration of the server 4 will be described. FIG. 4 is a block diagram illustrating a schematic configuration of the server 4.

  The server 4 includes a communication unit 11, a control unit 12, and a storage unit 13.

  The communication unit 11 communicates with the user terminal 1 and the administrator terminal 5 via a network.

  The storage unit 13 stores a program that is executed by a processor that constitutes the control unit 12. Further, the storage unit 13 stores information (terminal ID, position information, positioning time, moving distance, and the like) included in the positioning result notification received from the user terminal 1.

  The control unit 12 includes a position correction unit 21 and an analysis processing unit 22. This control part 12 is comprised with a processor, and each part of the control part 12 is implement | achieved by running the program memorize | stored in the memory | storage part 13 with a processor.

  The position correction unit 21 performs a jump determination for determining whether or not a jump has occurred based on the position and movement distance at each time regarding the person who is the target of the flow line output. A return determination is made to determine whether or not a return to the vicinity of the immediately preceding position has occurred. If a return has occurred, all the positions at each time from immediately after the jump to immediately before the return are corrected to the position immediately before the jump.

  The analysis processing unit 22 performs various analysis processes based on the position information corrected by the position correction unit 21, and generates, for example, a flow line connecting the positions of the respective times in time series.

  Next, the jump determination performed by the position correction unit 21 of the server 4 will be described. FIG. 5 is an explanatory diagram showing an outline of the jump determination performed by the position correction unit 21.

  In the position correction unit 21 of the server 4, if one movement distance, that is, the distance from the position at a certain positioning time to the position at the next positioning time is equal to or greater than a predetermined threshold Th <b> 1, a jump occurs. judge. In the present embodiment, the threshold value is set to 10 m, and when one moving distance is 10 m or more, it is determined to be flying.

  Here, in this embodiment, the positioning interval is 1 second. Further, assuming that the person is walking, the standard walking speed of 1 m / sec is set as the moving speed of the person. Accordingly, the moving distance of one time is 1 m, and the threshold value for jump determination, 10 m, is 10 times the normal moving distance.

  In this embodiment, the positioning interval is 1 second and the moving speed of the person is 1 m / sec. However, the positioning interval and the moving speed are not limited to this.

  Further, the situation in which the jump occurs differs depending on the installation situation of the beacon transmitter 2 and the like. Also, the accuracy required for position information differs depending on the size of the target area and the purpose of flow line analysis, etc., and it is necessary to correct the positioning result by determining that it is flying according to the accuracy required for this position information. Sex is different. For this reason, it is preferable that the administrator sets the jump determination threshold appropriately.

  Further, since the one-time moving distance varies depending on the moving speed of the person, a standard moving distance (for example, an average value of moving distances) of the target person is obtained, and the standard moving distance is obtained. Based on the above, a threshold for jump determination may be set for each person.

  Next, return determination performed by the position correction unit 21 of the server 4 will be described. FIG. 6 is an explanatory diagram showing an outline of return determination performed by the position correction unit 21. FIG. 7 is an explanatory diagram illustrating a specific example of return determination.

  The position correction unit 21 of the server 4 determines whether or not the position has returned to the vicinity of the position immediately before the jump after the jump occurred (return determination). Thereby, it is possible to discriminate between the first pattern and the second pattern that return to the vicinity of the position immediately before the flight and the third pattern that does not return to the vicinity of the position immediately before the flight (see FIG. 3).

  Here, if it does not return to the vicinity of the position immediately before the flight, or if it does not return to the vicinity of the position immediately before the flight, it does not return unless it moves the distance that is the same as the movement distance when the jump occurs. In the case where the vehicle has traveled a distance that is extremely longer than the flight distance, it is assumed that the positioning has not recovered from the abnormal state to the normal state, but has returned to the position immediately before the flight as a normal positioning result.

  Therefore, in this embodiment, when a jump occurs, the subsequent travel distance is added to calculate the cumulative travel distance after the jump occurs, the cumulative travel distance is compared with the jump distance, and the return determination execution timing is calculated. It is determined whether or not the return timing is determined, and it is determined whether or not the vehicle has returned to the vicinity of the position immediately before the flight (return determination).

  Specifically, a constant E (for example, 20 cm) corresponding to the positioning error is set, and the cumulative distance traveled after the occurrence of the jump is determined using a value (AE) obtained by subtracting the constant E from the jump distance A as a determination distance. When the distance (AE) is exceeded, return determination is performed.

  Since the positioning error varies depending on the situation of the target area, the administrator may set the constant E appropriately based on the degree of positioning error.

  In the present embodiment, when the distance between the position at the return determination execution timing and the position immediately before the jump is equal to or less than the predetermined threshold Th2, it is determined that the position has returned to the vicinity of the position immediately before the jump. That is, when a circular vicinity area centered on the position P (t−1) immediately before the jump is set and the position P (t + C) at the return determination execution timing falls within the vicinity area, the vicinity of the position immediately before the jump When the position P (t + C) at the return determination execution timing does not fall within the vicinity area, it is determined that the position does not return to the vicinity immediately before the flight.

  Here, if the person is walking continuously, the person's actual position can be determined by moving from the position immediately before the jump until the position is normalized and the position returns to the vicinity of the position immediately before the jump. It has changed from the position just before the flight. That is, the range in which it is assumed that the person is moving changes according to the elapsed time C from immediately after the flight to the execution timing of the return determination, and the elapsed time C from the time immediately after the flight to the execution timing of the return determination is long. It is assumed that the person has moved greatly from the position immediately before the flight.

  Therefore, in the present embodiment, the threshold value for return determination, that is, the size (radius) of the neighborhood area is set according to the elapsed time C from immediately after the flight to the execution timing of return determination. That is, when the elapsed time C is long, the neighborhood area is set large, and when the elapsed time C is short, the neighborhood area is set small.

  Here, in this embodiment, since the moving speed V of the person is 1 m / sec and the positioning interval is 1 sec, the return determination threshold (radius of the neighboring area) Th2 (sec) returns immediately after the flight. It becomes equal to the elapsed time C (m) until the determination execution timing (Th2 = C).

  In the example shown in FIGS. 7A and 7B, the flight distance is 15 m, and the cumulative movement distance is 15 m after 6 seconds from the occurrence of the jump. At this time, since it is assumed that the person has moved 6 m, the return determination threshold value (the radius of the neighboring area) Th2 is set to 6 m. Here, in the example shown in FIG. 7A, since the position P (t + 6) after 6 seconds is in the vicinity area, it is determined to return. On the other hand, in the example shown in FIG. 7B, since the position P (t + 6) after 6 seconds is not in the vicinity area, it is determined not to return.

  In the example shown in FIG. 7C, the flight distance is 15 m, and the accumulated movement distance is 15 m after 2 seconds from the occurrence of the jump. At this time, since it is assumed that the person has moved 2 m, the return determination threshold value (the radius of the neighboring area) Th2 is set to 2 m. Here, in the example shown in FIG. 7C, since the position P (t + 2) after 2 seconds is in the vicinity area, it is determined to return.

  In this embodiment, the movement speed of the person is set uniformly, and the threshold value for return determination (the radius of the neighboring area) is set according to the elapsed time. Based on this, a threshold value for return determination (the radius of the neighboring area) may be set. For example, when the moving speed is fast, the neighboring area becomes large, and when the moving speed is slow, the neighboring area becomes small. In this case, the moving speed of the target person may be estimated based on position information for a predetermined period immediately before the jump occurs.

  In the present embodiment, the moving speed is set on the assumption that the person is walking, but the person may be on the forklift. In this case, the moving speed is faster than that when walking. The neighborhood area becomes larger.

  Next, position correction performed by the position correction unit 21 of the server 4 will be described. FIG. 8 is an explanatory diagram showing an outline of position correction performed by the position correction unit 21.

  When it is determined in the return determination that the return has occurred, the position correction unit 21 of the server 4 returns from the position P (t) immediately after the jump to the position P (t + C-1) immediately before the return, as shown in FIG. All the positions at each time until are corrected to the position P (t−1) immediately before the flight. Thus, the person remains in the position immediately before the flight during the corrected period.

  On the other hand, if it is determined in the return determination that the return does not occur, the position after the occurrence of the jump is assumed to be normal. Therefore, as shown in FIG. 8B, the position after the occurrence of the jump is corrected. Do not do.

  In the present embodiment, all the positions at each time from the position P (t) immediately after the jump to the position P (t + C−1) immediately before the return are corrected to the position immediately before the jump. -1) and the return determination position P (t + C) may be corrected to a position.

  Next, the correction of the return determination threshold value performed by the position correction unit 21 of the server 4 will be described. FIG. 9 is an explanatory diagram showing an outline of correction of a threshold value for return determination.

  In the present embodiment, when the jump determination threshold is 10 m, it is determined that a jump has occurred when one moving distance is 10 m or more (see FIG. 5). Further, a return determination is performed to determine whether or not the position has returned to the vicinity of the position immediately before the jump after the jump has occurred (see FIG. 6). At this time, the cumulative movement distance after the occurrence of the jump is calculated, and the return determination is performed at the timing when the cumulative movement distance becomes substantially equal to the jump distance. If the return determination determines that the position has returned to the vicinity of the position immediately before the jump, the position at each time from immediately after the jump to immediately before the return is corrected to the position immediately before the jump.

  In the example shown in FIG. 9A, the flight distance is 11 m, and the cumulative movement distance is 11 m after 10 seconds. In this case, since the elapsed time C is 10 seconds, the position P (t + C) at the return determination execution timing enters the vicinity area when the return determination threshold value (the radius of the vicinity area) Th2 is set to 10 m. Then, it is determined that the return has occurred, and the position from immediately after the flight to immediately before the return is corrected.

  At this time, the distance between the return determination position (position at the return determination execution timing) P (t + C) and the position immediately before the flight may be close to 10 m. In this case, when the movement distance is 10 m or more, it is determined as a jump and the position is corrected, but the movement distance is close to 10 m at the corrected position, and the position correction corresponding to the jump is performed. Significance disappears.

  Therefore, in this embodiment, the elapsed time C from immediately after the flight to the execution timing of the return determination is equal to or longer than the time corresponding to the threshold value Th1 (10 m) for the flight determination (10 seconds when the moving speed is 1 m / second). If so, the return determination threshold value (the radius of the neighboring area) Th2 is reduced and corrected.

  Specifically, a correction is performed by subtracting a constant F (for example, 1 m) from the threshold value for return determination (the radius of the neighboring area) Th2 set according to the elapsed time C, and the corrected threshold value (Th2− F) determines whether or not the vehicle has returned to the vicinity of the position immediately before the flight.

  In the example shown in FIG. 9B, as in FIG. 9A, since the flight distance is 11 m and the accumulated movement distance becomes 11 m after 10 seconds, the elapsed time C becomes 10 seconds. Since the threshold value (the radius of the neighboring area) Th2 is not set to 10 m corresponding to the elapsed time C (10 seconds), but is set to a constant F (for example, 1 m), which is 9 m (= 10 m-1 m) short, the return determination is performed at the timing of execution. Since the position P (t + C) of the current position does not enter the neighboring area and is not determined to return, the position correction immediately after the jump to immediately before the return is not performed.

  Next, an operation procedure of the user terminal 1 and the server 4 at the time of transmitting / receiving position information will be described. FIG. 10 is a flowchart showing an operation procedure when transmitting / receiving position information.

  The user terminal 1 acquires the position information of its own device (ST101). And the positioning result notification containing terminal ID, a positional infomation, and positioning time is transmitted to the server 4 (ST102).

  In the server 4, when the communication unit 11 receives a positioning result notification transmitted from the user terminal 1 (Yes in ST 201), information (terminal ID, position information, positioning time, moving distance, etc.) included in the positioning result notification is received. The data is stored in the storage unit 13 (ST202).

  The above operation is periodically repeated at predetermined intervals from the time when the user terminal 1 enters the target area and starts positioning until the user terminal 1 leaves the target area and finishes positioning. The position information at each time is accumulated.

  Next, operation procedures of the server 4 and the administrator terminal 5 at the time of flow line output will be described. FIG. 11 is a flowchart showing an operation procedure when a flow line is output.

  When the server 4 receives the flow line output instruction including the flow line output condition (target person, time, etc.) from the administrator terminal 5 by the communication unit 11 (Yes in ST301), the position accumulated in the storage unit 13 From the information, position information corresponding to the output condition is searched (ST302). Then, based on the search result, it is determined whether or not a flow line can be output (ST303). Here, when there is no position information corresponding to the output condition and flow line output is not possible (No in ST303), an error notification is transmitted from the communication unit 11 to the administrator terminal 5 (ST304).

  On the other hand, if there is position information corresponding to the output condition and flow line output is possible (Yes in ST303), the position correction unit 21 next corrects the position, that is, near the position immediately before the jump after the jump occurs. If the process returns to step ST2, processing for correcting the position at each time from the occurrence of the jump to immediately before the return to the position immediately before the jump is performed (ST305). Then, the analysis processing unit 22 generates flow line information based on the corrected position information, and transmits the flow line information from the communication unit 11 to the administrator terminal 5 (ST306).

  In the administrator terminal 5, when an administrator performs an operation of instructing a flow line output by specifying an output condition (target person, time, etc.) by starting a browser and accessing the server 4, the output condition is set. A flow line output instruction is transmitted to the server 4 (ST401).

  Next, when the administrator terminal 5 receives from the server 4 an error notification indicating that the flow line cannot be output (Yes in ST402), the content of the error notification is displayed on the screen (ST403). When the flow line information is received from the server 4 (Yes in ST404), the flow line is displayed on the screen based on the flow line information (ST405).

  In the present embodiment, the position information correction process is performed at the timing when the flow line output is instructed, but the timing at which the correction process is performed is not particularly limited. For example, the correction process may be performed at an appropriate timing regardless of the flow line output instruction. Further, the corrected position information may be discarded when the flow line information is transmitted according to the flow line output instruction, but may be stored in the storage unit 13.

  Next, the procedure of the process (ST305 in FIG. 11) performed by the position correction unit 21 of the server 4 will be described. FIG. 12 is a flowchart showing a procedure of processing performed by the position correction unit 21.

  In the position correction unit 21 of the server 4, first, the movement distance D (t) at the first time (t = 0) in the target period of the person who is the target of the flow line output is acquired from the storage unit 13, and a jump occurs. It is determined whether or not the movement distance D (t) is equal to or greater than the jump determination threshold value Th1 (10 m) (ST501).

  If no jump has occurred (No in ST501), the time t is incremented (ST502), and the process returns to ST501 to proceed to the jump determination at the next time (after one second).

  On the other hand, when a jump occurs (Yes in ST501), the moving distance D (t) at that time is set to the jump distance A (m) (ST503).

  Next, the current travel distance D (t + C) is added to the previous cumulative travel distance B to calculate the current cumulative travel distance B (ST504). Note that C = 0 at the time immediately after the flight.

  Also, the elapsed time C from the occurrence of jump is incremented (ST505).

  Next, it is determined whether or not it is a return determination timing, that is, whether or not the cumulative movement distance B is equal to or greater than a value (AE) obtained by subtracting a constant E from the jump distance A (ST506).

  Here, when it is not the timing of the return determination (No in ST506), the process returns to ST504, and the cumulative moving distance B at the next time is calculated.

  On the other hand, when it is the timing of the return determination (Yes in ST506), next, the elapsed time C is set to the threshold value Th2 for the return determination, and a return determination is made as to whether or not the position has returned to the vicinity of the position immediately before the flight. That is, it is determined whether or not the distance between the position P (t−1) immediately before the flight and the position P (t + C) C seconds after the flight is equal to or less than the threshold Th2 (ST507). As shown in FIG. 9B, the elapsed time C from immediately after the jump to the execution timing of the return determination corresponds to the time corresponding to the threshold Th1 (10 m) for the jump determination (10 if the moving speed is 1 m / second). If it is equal to or longer than (second), the return determination threshold value (neighboring area radius) Th2 is shortened by a constant F (for example, 1 m) instead of a distance (for example, 10 m) corresponding to the elapsed time C (for example, 10 seconds). (Th2 = C−F) should be set.

  Here, when returning to the vicinity of the position immediately before the flight (Yes in ST507), all the positions P (t) to P (t + C-1) at the respective times from immediately after the flight to immediately before the return are set to the position P ( Correction is made to t-1) (ST508).

  On the other hand, if the position does not return to the vicinity immediately before the flight (No in ST507), the position correction (ST508) is not performed.

  Next, time t is set to time (t + C) after C seconds (ST509).

  Next, it is determined whether it is the last time of the target period (ST510). If it is not the last time of the target period (No in ST510), the process returns to ST501 and proceeds to the next time jump determination. On the other hand, if it is the last time of the target period (Yes in ST510), the process ends.

  As described above, the embodiments have been described as examples of the technology disclosed in the present application. However, the technology in the present disclosure is not limited to this, and can be applied to embodiments in which changes, replacements, additions, omissions, and the like have been performed. Moreover, it is also possible to combine each component demonstrated by said embodiment into a new embodiment.

  For example, in the above-described embodiment, an example in which position information of a person staying in a room in a building such as a factory is collected has been described. However, the target location is not limited to this, for example, a theme park or the like You may make it collect the positional information on the person who stays in a facility for the facility.

  Moreover, in the said embodiment, although the user terminal 1 performed indoor positioning which acquires a positional information based on the beacon signal of the beacon transmitter 2 installed in the building, it is limited to such indoor positioning. However, it may be one using a satellite positioning system such as GPS (Global Positioning System).

  The management device, the management system, and the position correction method according to the present invention have an effect of appropriately correcting the position information when a jump occurs, and manage the position information of the moving body. As well as a position correction method for correcting the position information of the moving body.

1 User terminal (terminal equipment, mobile)
2 Beacon transmitter 3 Access point 4 Server (management device)
5 Manager terminal 11 Communication unit 12 Control unit 13 Storage unit

Claims (7)

A management device for managing position information of a moving object,
A storage unit for accumulating position information of each time of the mobile body;
A control unit;
With
The controller is
Performing a jump determination as to whether or not a jump has occurred in which the one-time moving distance of the position information is equal to or greater than a predetermined threshold;
When the jump occurs, a return determination is made as to whether or not a return to the vicinity of the position immediately before the jump has occurred,
When the return occurs, the management apparatus corrects the position information at each time from the position immediately after the jump to the position immediately before the return based on the position information of the position immediately before the jump. The controller is
When the jump occurs, the subsequent travel distance is added to calculate the cumulative travel distance after the jump occurs, and the return determination is performed by comparing the cumulative travel distance with the travel distance when the jump occurs. The management apparatus according to claim 1, wherein it is determined whether or not it is an execution timing of the return, and the return determination is performed when the return determination is performed. The controller is
The management according to claim 2, wherein the return is determined to occur when a distance between the position at the execution timing of the return determination and the position immediately before the jump is equal to or less than a predetermined threshold value. apparatus. The controller is
The management apparatus according to claim 3, wherein a threshold value for the return determination is set based on an elapsed time from immediately after the jump to an execution timing of the return determination. The controller is
5. The return determination threshold obtained based on the elapsed time is reduced and corrected when the elapsed time is equal to or longer than a time corresponding to the jump determination threshold. The management apparatus as described in. A management system in which a management device manages position information of a moving object,
The management device
A storage unit for accumulating position information of each time of the mobile body;
A control unit;
With
The controller is
Performing a jump determination as to whether or not a jump has occurred in which the one-time moving distance of the position information is equal to or greater than a predetermined threshold;
When the jump occurs, a return determination is made as to whether or not a return to the vicinity of the position immediately before the jump has occurred,
When the return occurs, the management system corrects the position information of each time from the position immediately after the jump to the position immediately before the return based on the position information of the position immediately before the jump. In the management device, a position correction method for correcting the accumulated position information of the moving body,
Performing a jump determination as to whether or not a jump has occurred in which the one-time moving distance of the position information is equal to or greater than a predetermined threshold;
When the jump occurs, a return determination is made as to whether or not a return to the vicinity of the position immediately before the jump has occurred,
When the return occurs, position information at each time from the position immediately after the jump to the position immediately before the return is corrected based on the position information of the position immediately before the jump. .

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