JP5541836B2 - Feed rail and position management system - Google Patents

Description

  The present invention relates to a power supply rail and a position management system suitable for use in, for example, grasping the position of a person indoors.

  As a method for detecting the position of a person indoors, there is a navigation system that receives absolute position information transmitted from a transmission means and corrects relative position information according to the absolute position information (for example, Patent Documents 1 and 2). reference).

  In Patent Literatures 1 and 2, a walking navigation device including a forward direction accelerometer, an upward direction accelerometer, and a three-axis magnetometer is attached to a human body, and relative position information obtained from a measurement value calculated from the measuring instrument is as follows: Correction is performed in accordance with the absolute position information received from the transmission device installed at a predetermined position.

  Furthermore, as another method, a person who owns a mobile phone detects the position by using a GPS (Global Positioning System) outdoors and uses an indoor LAN (Local Area Network) system installed indoors. There is one that detects a position based on wireless strength from a base station to a mobile phone (see, for example, Patent Document 3).

JP 2002-139340 A JP 2004-138513 A JP-A-2005-351823

By the way, in the techniques of Patent Documents 1 and 2, various sensors must be attached to a person. In particular, as in the embodiment of Patent Document 2, the position of a person such as a nuclear power plant is required. Except for the case where it is necessary to grasp the information in detail, it is annoying for a person to wear various sensors.
Further, not only the wireless LAN used in the technique of Patent Document 3, but a base station, that is, a transmitter, that is normally used for a wireless LAN is installed according to its output. For example, in the case of a transmitter having an output with a radius of 30 meters, the installation interval of the transmitters is about 50 meters. Then, the radio field intensity from these remote transmitters to the terminal owned by the person is calculated, and the position is detected.
In measuring the radio field intensity, the detection sensitivity increases when measuring with a strong radio wave at a short distance, but the position detection using the wireless LAN system is short because it deviates from the purpose of performing the original radio communication due to the design of the transmitter. There is a problem that installation at a distance is impossible, and the cost is increased.

  The present invention has been made in view of such circumstances, and an object thereof is to provide, for example, a power supply rail and a position management system that are preferably used for detecting the position of a detection target indoors.

To solve the problems described above, the configuration of the power supply rail to which the present invention is employed, the rail body, provided at a predetermined position in the extending direction of the rail body, a detection unit that issues detects the physical quantity of the peripheral at the predetermined position the storage means for storing identification information of the detecting means, while extracting a signal superimposed on the current flowing through the power line, and a signal transmitting and receiving means for superimposing a signal to the current flowing in the power line, from said current flowing in said power line When the identification information stored in the header of the signal extracted by the signal transmission / reception means is the identification information of the detection means stored in the storage means, the detection means performs a detection operation, and the detection the detection signal by the operation, characterized by comprising: a detection control unit for causing the signal transmitting and receiving means the processing to be superimposed on the current along with the identification information.

In order to solve the above-described problems, another configuration of the power supply rail adopted by the present invention is a rail main body and a detection unit that is provided at a predetermined position in the extension direction of the rail main body and detects a physical quantity around the predetermined position. A storage means for storing identification information of the detection means; a movable body provided in the rail main body, movable along the extension direction of the rail main body, to which an electrical device is attached; and the movement from the rail main body A power supply means for supplying power to the body, a signal superimposed on the current flowing through the power line, a signal transmitting / receiving means for superimposing a signal on the current flowing in the power line, and a signal extracted by the signal transmitting / receiving means based, an operation control means for controlling the operation of the electrical device, the storage from the current flowing through the power line in the header of the signal extracted by said signal transmitting and receiving means The identification information being found in the case of identification information of the stored said detection means in said storage means, to perform the detection operation of the detection means, a detection signal from the detection operation on the current along with the identification information characterized by comprising a detection control means for causing the processing to be superimposed on the signal transmitting and receiving means.

In the above-described configuration, a traveling unit that causes the mobile body to travel along the rail body using the power supplied by the power supply unit is provided in at least one of the rail body or the mobile body, and the operation The control means preferably controls the traveling of the moving body by the traveling means based on the signal extracted by the signal transmitting / receiving means.

In order to solve the above-described problems, the configuration of the position management system adopted by the present invention is a physical quantity for calculating the position of the detection target based on the above-described power supply rail and the detection signal from the detection means of the power supply rail. A position management system comprising: a reference position storage means for storing a predetermined position of the detection means provided on the power supply rail; and a detection position from the detection means . And position calculation means for calculating the position of the detection target from a relative position with respect to a predetermined position of the detection means stored in the reference position storage means based on a detection signal.

In order to solve the above-described problem, another configuration of the position management system employed by the present invention is a position management system including the above-described power supply rail and a management server connected to the power supply rail via a network. The management server includes information analysis means for analyzing a physical quantity for calculating a position of a detection target based on a detection signal from the detection means of the power supply rail, and the information analysis means includes the power supply a reference position storage means for storing a predetermined position of the detecting means provided on the rail, based on a detection signal from said detecting means, said detecting a relative position between a predetermined position of the detection means stored in the reference position storage means And a position calculation means for calculating the position of the object.

  The said structure WHEREIN: It is preferable that the said detection means is provided with the mechanism which transmits or receives at least any one of a magnetism, an ultrasonic wave, infrared rays, and radio | wireless.

According to the present invention, for example, a power supply rail provided with detection means at a predetermined position is arranged on the ceiling of the floor, and a physical quantity around the predetermined position is detected by the detection means. For example, when an infrared sensor is used as the detection means, it is possible to detect the heat of a person (detection target) existing under the power supply rail, and to grasp the presence of a person on the floor.
In addition, since this power supply rail is used as part of the PLC system, signals can be exchanged on the power line, and the position of the detection target can be managed without separate wiring from the detection means. It becomes.

Next, a first embodiment according to the present invention will be described with reference to the drawings.
<< First Embodiment >>
<Configuration>
1. Location Management System The location management system 10 according to the first embodiment will be described by way of example when used to grasp the situation of people scattered in a building.
Specifically, as shown in FIG. 1, the power supply rails 50 are arranged at predetermined positions on the ceiling of each floor (for example, 1F to 5F) of the building. And is connected to an external power transmission line 12 via a transformer 13. A management server 21 is connected to the switchboard 11 via a master PLC (Power Line Communications) adapter 15. The master PLC adapter 15 superimposes various signals from the management server 21 on the current flowing in the power line, and extracts the signal superimposed on the current flowing in the power line and outputs it to the management server 21.

  Further, in this position management system 10, a plurality of infrared sensors 40 are provided at predetermined positions on the power supply rail 50, and whether there is a person in the area that each infrared sensor 40 is in charge of based on the detection signal from each infrared sensor 40. It is to manage whether or not.

2. Configuration of Feed Rail First, the configuration of the feed rail 50 will be described. As shown in FIG. 2, the power supply rail 50 includes a rail body 51, a moving body 60 that moves along the extending direction of the rail body 51, a position detection unit 90 (see FIG. 3), and the like. The rail body 51 extends in the axial direction parallel to the x axis.
For example, a light L is detachably attached to the moving body 60 as an electric device. And the moving body 60 moves the moving body 60 to the axis line (arrow a direction) parallel to the x-axis direction by the drive of the built-in motor MX.

  As shown in FIGS. 2 and 3, the rail body 51 is formed in a substantially “U” cross section that opens downward and extends in the x-axis direction. A folded portion is formed in the opening portion so as to extend in the extending direction, and a recessed groove 52 into which a convex portion 64 described later is inserted is formed in the extending direction in each folded portion. On the upper surface of the rail body 51, a rack 53 in which the pinion 62 of the moving body 60 is engaged with the inner surface side is formed in the extending direction of the rail body 51. Further, on the side surface of the rail body 51, plate-like power supply terminals 54, 54 are attached to the inner surface side in the extending direction as power supply conductors. A plug 56 is connected to the power supply terminal 54 via a lead wire 55 so as to be connected to a commercial power source (not shown) such as an outlet.

  The moving body 60 has a rectangular parallelepiped sliding portion 61 that moves while sliding in the x-axis direction within the rail body 51, and a cylindrical shape that protrudes in the y-axis direction from the rail body 51 and has an external thread portion 65A formed on the outer periphery. Projecting portion 65. A female connector 65B for commercial power is provided on the lower surface of the protrusion 65. The terminal of this female connector 65B is connected to a power receiving terminal 66, which will be described later, via a lead wire (both not shown). Thereby, electric power is supplied to the female connector 65B through the power supply terminal 54 and the power receiving terminal 66.

A part of the peripheral surface of the pinion 62 is provided on the upper surface of the sliding portion 61 so that the pinion 62 is driven by the motor MX. As shown in FIG. 4, the pinion 62 is formed by a circular gear and meshes with a transmission gear 63 fixed to the shaft of the motor MX. The rotation of the shaft generated by driving the motor MX is transmitted to the pinion 62 via the transmission gear 63.
The pinion 62 is meshed with the rack 53 of the rail body 51 when the moving body 60 is assembled into the rail body 51. By driving the motor MX in the forward / reverse direction, the moving body 60 moves in the extending direction of the rail body 51 and moves the light L in the arrow a direction.

  On the other hand, convex portions 64 and 64 that are inserted into the concave grooves 52 of the rail body 51 are formed on the lower surface of the sliding portion 61 (see FIG. 3). At the stage where the sliding portion 61 of the moving body 60 is inserted into the rail body 51, the convex portions 64, 64 are inserted into the concave grooves 52, 52, respectively, and the y-axis of the sliding portion 61 with respect to the rail body 51. Movement in the direction is restricted.

Each side surface of the sliding portion 61 is provided with a power receiving terminal 66 that is in electrical contact with each power feeding terminal 54 of the rail body 51. The power receiving terminal 66 includes a conical terminal portion 66B housed in the insertion hole 66A, and a spring portion 66C that biases the terminal portion 66B outward. The power supply terminal 54 and the power reception terminal 66 constitute power supply means.
Furthermore, a substrate 67 on which electronic elements constituting a circuit such as a slave PLC adapter 77 and a controller 76 described later are mounted is built in the sliding portion 61.

3. Next, the position detector 90 that detects the position of the moving body 60 in the extending direction of the rail body 51 will be described.
As shown in FIG. 3, the position detection unit 90 includes a light emitting / receiving unit 91 provided on the moving body 60 side and a barcode 92 provided on the rail body 51 side. The bar code 92 is composed of bar codes 92a, 92b,... 92n indicating different code information, and the bar code is provided at a predetermined interval on the inner surface of the rail body 51 facing the light emitting / receiving unit 91 as shown in FIG. Affixed every time. In the case of the first embodiment, it is disposed below the power supply terminal 54, and the position in the horizontal (x-axis) direction corresponds to the position that is the center of the frame F. Note that the barcode may be a two-dimensional barcode.

Then, the position detector 90 reads the barcode with the light emitting / receiving unit 91 and detects the position of the moving body 60 in the rail body 51 based on the read barcode information. For this purpose, the barcode information and the position in the rail body 51 are stored in advance in a ROM such as the controller 71 as a data table.
In the position detection unit 90, the position of the moving body 60 in the extending direction of the rail body 51 is intermittently detected by reading the barcode 92 attached at predetermined intervals with the light emitting / receiving unit 91. It will be.

In the power supply rail 50 configured as described above, the light L is moved in the direction of arrow a by driving the motor MX in response to the command signal. This movement is controlled by a detection signal in the position detector 90.
The light L is mechanically fixed to the moving body 60. Therefore, at one end of the light L, a male connector 31 from which an electrode protrudes in parallel and a penetrating portion 31A of the male connector 31 are engaged. The bag-shaped nut 32 is provided, and the outer peripheral surface of the bag-shaped nut 32 is knurled. The light L is fixed to the moving body 60 of the electrode rail 50 by inserting the electrode of the male connector 31 into the female connector 65B and screwing the bag-shaped nut 32 onto the male screw portion 65A. In addition, the light L has a function of controlling lighting / dimming according to a command signal from the management server 21.

4). Infrared Sensor As shown in FIGS. 6 and 7, four sensors 40 are provided at positions spaced apart from each other by a predetermined distance with respect to the longitudinal direction of the rail body 51 of the power supply rail 50. The infrared sensor 40 detects the lower situation by being provided at the folded portion on the side where the rail body 51 is opened. The infrared sensor 40 detects infrared rays corresponding to the temperature generated from the human body.
Here, the positions of the power supply rail 50 and the infrared sensor 40 will be described.
For example, Fig.8 (a) is the figure which looked at square 1F from the ceiling. Four power supply rails 50 are installed in parallel, and each of the power supply rails 50 is provided with four infrared sensors 40. The infrared sensors 40 are located at the centers of 16 areas a to p. Responsible for area detection.

Further, IDs are assigned to the power supply rail 50 and the infrared sensor 40, and the relationship between the rail ID of the power supply rail, the sensor ID of the infrared sensor 40, and the area is, for example, a database stored in the RAM of the management server 21. (See FIG. 10).
That is, the rail ID of the power supply rail 50 provided across the areas a to d on the first floor is “aaaaaa1”, and the sensor IDs provided on the power supply rail 50 are “111” “112” “113” “114”. " The infrared sensor 40 with the sensor ID “111” has the area a, the infrared sensor 40 with the sensor ID “112” has the area b, the infrared sensor 40 with the sensor ID “113” has the area c, and the sensor ID “114”. The infrared sensor 40 is in charge of the area d.

5. Next, the position management system 10 will be described with reference to FIG.
First, the PLC system is a technique for superimposing a signal from a network such as the Internet on the power flowing through the transmission line and constructing a LAN (Local Area Network) in a range where the superimposed power is supplied. .
In general, when a PLC system is constructed as an indoor LAN, as shown in FIG. 1, a master PLC adapter 15 is installed near the switchboard 11 to superimpose a signal on a current flowing through a power line and extract a signal from the current. Connect the slave PLC adapter near the outlet near the electrical equipment to be used. Then, the slave PLC adapter extracts a signal from the electric power and outputs it to the electric device, or transmits a detection signal or the like on the electric device side superimposed on the current flowing through the electric power line.
In the position management system according to the first embodiment, the management server 21 is connected to the power supply line 16 via the master PLC adapter 15 for management indoors.
Here, the signals transmitted from the management server 21 include a control signal (command signal for instructing operation to the motor), a detection start signal to the infrared sensor 40, and the like, which are transmitted from the power supply rail 50 side to the management server 21. The signal is a detection signal from the infrared sensor 40 or the like.

Next, an electrical configuration in the moving body 60 will be described.
AC power VAC is supplied to the moving body 60 via the power supply terminal 54 and the power receiving terminal 66. The AC / DC converter 70 is built in the moving body 60, and converts AC power VAC having a commercial frequency into a DC voltage VDC. Although the configuration of the AC / DC converter 70 is omitted, it is generally composed of a transformer, a bridge circuit, a regulator, and the like. The converted DC voltage VDC is supplied to the substrate 67. Circuits such as a slave PLC adapter 72 and a controller 71 are configured by electronic elements mounted on the substrate 67.
As with the master PLC adapter 15, the slave PLC adapter 72 extracts a signal (command signal) from the AC power VAC and superimposes a signal (detection signal) from the controller 71 on the current flowing through the power line.

  The controller 71 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), and a RAM (Random Access Memory) (all not shown). The CPU reads and executes various programs stored in the ROM. The ROM stores in advance an ID of a motor, an ID of an electrical device, and the like. Furthermore, data indicating the position of the moving body 60 in the x-axis direction is sequentially updated and stored in the RAM in accordance with the detection signal from the position detection unit 90.

  The controller 71 is connected to the position detector 90 on its input side, and is connected to the motor MX and the light L on its output side. Furthermore, the controller 71 exchanges signals with the slave PLC adapter 72.

Furthermore, an electrical configuration in the vicinity of the infrared sensor 40 provided on the rail body 51 will be described.
The rail body 51 is provided with a substrate 78 that constitutes a circuit such as an AC / DC converter 75, a slave PLC adapter 77, and a controller 76, similar to the moving body 60.
One substrate 78 may be provided for one rail body 51 or one for each infrared sensor 40.

In the ROM of the controller 76, the sensor ID of the infrared sensor 40 is stored in advance. For example, the sensor IDs “111”, “112”, “113”, and “114” are stored for the power supply rail 50 with the rail ID “aaaaaa1”, and the sensor IDs “121” and “114” are stored for the power supply rail 50 with the rail ID “aaaaaa2”. “122”, “123”, and “124” are stored. The controller 76 determines whether or not the ID included in the signal extracted from the power by the slave PLC adapter 77 is a sensor ID stored in the ROM, and if there is a corresponding signal, the infrared sensor 40 detection operations are performed, and a detection signal is superimposed on the current flowing through the power line via the slave PLC adapter 77.

6). Configuration of Management Server Next, the management server 21 will be described.
The management server 21 includes a central processing unit (CPU), a read only memory (ROM), and a random access memory (RAM) (all not shown).

In the ROM of the management server 21, a control program for controlling the moving body 60 and the electronic device and a program for performing position management processing by the sensor 40 are stored in advance.
Further, as shown in FIG. 10, a data table in which a floor number, a rail ID, a sensor ID, and an area are associated is stored in the storage area of the RAM. Thereby, in the management server 21, if the sensor ID is known, the floor NO, the rail NO, and the area can be known. For example, when the sensor ID of the detection signal from the infrared sensor 40 transmitted to the management server 21 is “113”, it is a detection signal from the power rail on the first floor (rail ID “aaaaaa1”) and the area c. I understand that.
In addition, an actual sketch as shown in FIG. 8B is stored in the RAM of the management server 21 by a user operation. In FIG. 8B, a library is shown for convenience. A bookcase F is arranged in a square room except for the entrance D as shown.

Further, the management server 21 generates a data table including a command signal as shown in FIG. The data table includes a rail ID of the power supply rail 50, a motor identification motor ID, a command signal for the motor, a light L identification ID, and a command signal for the light L. Here, the command signal for the identification ID (MID) of the motor MX is a value indicating the position of the moving body 60 with respect to the rail body 51, and the command signal for the identification ID (MID) of the light L is an operation of lighting / dimming control. The signals for commanding are respectively shown.
Then, the management server 21 reads the command signal from the data table shown in FIG. 11 and transmits the read command signal to the motor MX or the light L, thereby controlling the operation of the motor MX or the light L. For example, the light L can be moved in the extending direction of the power supply rail 50, the light L can be turned on / off, and the dimming control can be performed remotely.

  Then, in the management server 21, based on the detection signal from the infrared sensor 40 of the power supply rail 50 monitored on the actual floor, the management server 21 performs identification by lighting an area where a person exists on the sketch drawing of FIG. Plan and monitor.

<Operation>
Since the movement of the moving body 60 and the operation control of the light L have been described above, the description thereof will be omitted.
Here, an operation for specifying an area where a person to be detected exists based on a detection signal detected by the infrared sensor 40 will be described.
The management server 21 calls the location management process from the ROM and executes the program.
From the management server 21, a detection start signal for starting detection is supplied to the infrared sensor of the floor to be managed. The sensor ID of the infrared sensor 40 to be detected is stored in the header of this detection start signal.

The detection start signal is superimposed on the current flowing through the power line by the master PLC adapter 15 and supplied to each power supply rail 50 in the building. The slave PLC adapter 77 of the power supply rail 50 extracts a detection start signal from the electric power, and determines whether or not the extracted signal is a sensor ID stored in the controller 76. For example, when the designated IDs of the detection start signal are “111” to “144”, it means that the management server 21 requests a detection signal for each infrared ray 40 for the first floor.
When the controller 76 receives the sensor ID “111”, the infrared sensor 40 detects infrared rays in the area a, and this detection signal is superimposed on the current flowing through the power line via the slave PLC adapter 77. It is transmitted to the management server 21.
The management server 21 manages whether or not there is a person for each area based on the detection signal from the infrared sensor 40 thus supplied.

  Specifically, as shown in FIG. 8B, when there is a person T in the area d, detection is performed from the infrared sensor 40 having the sensor ID “114” among the infrared sensors 40 that sequentially perform the detection operation. Since the value of the signal becomes larger than that of the other detection signals, it can be seen that there is a person in the area d, and the area d in the sketch in FIG. 8B is displayed on the monitor by blinking. Thereby, in the management server 21, the area where a person exists can be grasped | ascertained.

<Effects of First Embodiment>
In the first embodiment, a power supply rail provided with an infrared sensor 40 at a predetermined position is arranged on the ceiling of the floor, and the temperature of the area handled by the infrared sensor 40 is measured by the infrared sensor 40. As described above, each infrared sensor 40 performs a detection operation for each area in which the floor is sorted. Therefore, by monitoring the detection signal from the infrared sensor 40, whether there is a person in the area. It can be determined whether or not.
Moreover, since the management server 21 monitors each floor, it is possible to manage whether or not there is a person in the area for each floor of each floor.

  Further, since the management server 21 can also control the operation of the moving body 60, when the infrared sensor 40 detects that a person moves in the area, the light L is moved following the movement. You can also. Thereby, useless light can be eliminated and effective light extraction can be achieved.

  Specifically, as illustrated in FIG. 8B, when the person T is in the area d, the management server 21 positions the sensor ID 114 with respect to the motor MX of the power supply rail 50 with the rail ID “aaaaaa1”. A command signal for positioning the moving body 60 is transmitted to the area d, and the area L is illuminated by the moved light L. Further, as shown in FIG. 8B, when the person T moves from the area d to the area c, the management server 21 can manage this, so the management server 21 connects the sensor MX to the sensor MX of the power supply rail. A command signal for moving from the position of ID 114 to the position of sensor ID 113 is transmitted. Thereby, it becomes possible to illuminate the area c to which the person T moves with the light L.

  Further, when the person T moves from the area d to the area c, the detection signal of the sensor ID 113 tends to increase while the detection signal of the sensor ID 114 decreases. Therefore, the management server 21 stores this tendency in advance, and when this tendency is detected, the management server 21 determines that the person T is moving from one area to another area, and changes the signal. Accordingly, the light L may be moved by calculating the moving speed of the moving body 60. As a result, the light L can be moved following the movement of the person T.

In addition, since the power supply rail 50 uses a PLC system, by performing transmission / reception of a signal using a power supply line, wiring that occurs when the infrared sensor 40 is installed is not performed separately later. The position management of the detection target becomes possible.
As described above, the position management system is a technology that plays a role in effective utilization of the power supply rail 50.

<Specific example>
In the first embodiment, a library is illustrated. However, in the case of a department store, a speaker is attached to the moving body 60 instead of the light L, and a group of people is measured by the infrared sensor 40. Thereby, the management server 21 can also move the speaker with respect to the movement of this group of people. In this case, service information or the like may be broadcast from a speaker.
Further, the management server 21 can set a message to be individually sent to a speaker having identification information. For this reason, the management server 21 can send a message according to the degree of complexity after grasping the situation of the person in each area of each floor. For example, when a time sale is held on the same floor, the speaker is moved to an area where people are gathered, the contents of the time sale are broadcasted, and then a message is sent after the speaker is made to follow the movement of the person. It can also be shed.

Further, when this position management system is used in a museum or the like, a speaker is used as an electric device. Thereby, when a person enters a predetermined area by the infrared sensor 40, the introduction of the exhibits displayed in this area, the introduction of the author, and the like may be notified by voice.
Furthermore, in this location management system, for example, when it is found that a person has entered an area where a general person cannot enter, for example, staff only, a message to leave the area is sent from the speaker. Also good.

<< Second Embodiment >>
Next, a second embodiment according to the present invention will be described.
The feature of this embodiment is that the position management system functions as an indoor GPS that identifies individual positions by using a wireless transceiver as a sensor. In addition, the same code | symbol is attached | subjected to the component same as the component described in 1st Embodiment mentioned above, and the description shall be abbreviate | omitted.
First, the overall configuration of the location management system 10 ′ according to the second embodiment will be described with reference to FIG.
The only difference in configuration from the location management system 10 according to the first embodiment is that the management server 21 'is connected via a network.
The management server 21 ′ includes a CPU, a ROM, and a RAM (all not shown).

And in ROM of management server 21 ', the control program which controls the mobile body 60 and an electronic device, and the program which performs the position management process by the transmission / reception sensor 41 mentioned later are stored beforehand.
In the ROM storage area, as shown in FIG. 13, a sensor ID, a floor number, and a reference position (latitude, longitude) are associated with each building name and stored as a data table.
For example, three transmission / reception sensors 41 are installed on the first floor of a square building via a power supply rail. The reference position of the transmission / reception sensor 41 with the sensor ID “111” is (X111, Y111), and the transmission / reception with the sensor ID “112” is performed. The reference position of the sensor 41 is (X112, Y112), the reference position of the transmission / reception sensor 41 with the sensor ID “113” is (X113, Y113).
In the present embodiment, for convenience of explanation, a case where three transmission / reception sensors 41 are installed on 1F will be described. The operations of the controller 76 and the slave PLC adapter 77 in the power supply rail 50 are the same as those in the first embodiment described above, and the description thereof is omitted.

  This data table is created by manually inputting the layout of each floor in the building obtained in advance by the manager and the position and length of the actually measured power supply rail 50. Note that the data table creation method is not limited to this, and when the power supply rail 50 is installed at a predetermined position, other data is automatically input simply by inputting the layout of each floor in the building. Alternatively, the data table may be created by providing an orientation sensor (geomagnetic sensor) on a certain power supply rail and calculating a reference position from a relative position of another rail with respect to the orientation sensor.

Here, the relationship between the transmission / reception sensor 41 and the detection target will be described.
The transmission / reception sensor 41 has a function of transmitting and receiving radio waves, and a detection target of the transmission / reception sensor 41 is a wireless IC tag. The wireless IC tag is assigned a unique ID in advance, and has a function of transmitting a response signal with the unique ID by receiving a wireless signal. The wireless IC tag is assumed to be built in a portable electronic device such as a cellular phone.

  Thus, when a wireless signal having a certain waveform is transmitted from the transmission / reception sensor 41 to the wireless IC tag, the wireless IC tag transmits a response signal to which the unique ID is assigned based on the received waveform to the transmission / reception sensor 41. In the management server 21 ′, the unique ID of the wireless IC tag is extracted from the detection signal (response signal) received via the transmission / reception sensor 41, and the time from the transmission to the reception of the wireless signal, the change in amplitude, the phase difference, etc. The relative distance from the transmission / reception sensor 41 to the wireless IC tag is calculated.

Next, the operation of the position management system 10 ′ as in the present embodiment will be described with reference to FIG.
The management server 21 'instructs the transmission / reception sensor 41 that requires the detection signal (response signal) to transmit a radio signal (step S1).
For example, when it is desired to manage 1F of a square building, a drive signal for driving the transmission / reception sensor 41 with sensor IDs “111”, “112”, and “113” is transmitted. A sensor ID is given to the header of this drive signal.
The drive signal transmitted via the network and the power supply rail 50 is extracted by the slave PLC adapter 77 of the power supply rail 50, and the controller 76 compares the stored sensor ID with the sensor ID given to the header to make a match. Wireless signal transmission is permitted for the sensor ID.

In this example, the transmission / reception sensors 41 with sensor IDs “111”, “112”, and “113” are driven, and wireless signals with different waveforms are sequentially transmitted.
The wireless IC tag transmits a detection signal (response signal) provided with a unique ID of the wireless IC tag to the transmitted wireless signal. For example, after the wireless signal from the transmission / reception sensor 41 with the sensor ID “111” is reflected by the wireless IC tag, the wireless signal from the transmission / reception sensor 41 with the sensor ID “112” is transmitted, and the transmission / reception with the sensor ID “112” is performed. After the wireless signal from the sensor 41 is reflected by the wireless IC tag, the wireless signal from the transmission / reception sensor 41 with the sensor ID “113” is transmitted.
As a result, the management server 21 ′ receives the detection signals received by the transmission / reception sensors 41 having the sensor IDs “111”, “112”, and “113” (step S2).

The management server 21 ′ analyzes the detection signal and extracts the detection signal to which the unique ID is assigned (step S3). In this case, three detection signals are extracted.
Further, the management server 21 ′ calculates the relative position of the wireless IC tag with respect to the sensor position from the strength of each detection signal (step S4).
Specifically, the time from the transmission of the radio signal to the reception of the detection signal is detected for each sensor 41,
Transmission / reception sensor with sensor ID "111" ta
Transmission / reception sensor with sensor ID “111”... Tb
Transmission / reception sensor with sensor ID "111" tc
As a result, a circle having a radius of time × constant A around the coordinates of each sensor is created.
Sensor ID “111” (x−x111) (y−y111) = (Ata) ²
Sensor ID “112” (x−x112) (y−y112) = (Atb) ²
Sensor ID “113” (x−x113) (y−y113) = (Atc) ²
The point where the three circles intersect is calculated from the three equations. This intersecting point is the position to be detected (steps S4 and S5).

  Thus, in the position management system 10 ′ according to the second embodiment, as shown in FIG. 15, the position (X, Y) where the person T is present can be managed as coordinates. For this reason, when a user who owns a mobile phone equipped with a wireless IC tag acquires location information, the location is determined by GPS positioning using a GPS antenna built in the mobile phone, When positioning by GPS becomes impossible, it is possible to acquire its own position by latitude and longitude by making an inquiry to the management server 21 ′. In addition, since the management server 21 'can monitor the building for each floor, it is possible to manage the floor on which the person T to be detected is located.

In addition, in 2nd Embodiment, although the case where the position with respect to one detection target (wireless IC tag) was calculated was illustrated, this invention is not limited to this, It calculates also about several wireless IC tag. It is possible.
In this case, when one wireless signal is transmitted from the transmission / reception sensor 41, a plurality of detection signals (response signals) are obtained from each wireless IC tag at different times. Since these detection signals are waveform deformations corresponding to the unique ID of each wireless IC tag, a database in which this waveform is associated with the wireless IC tag is stored in the management server 21 ′. Thereby, each detection signal detected by each transmission / reception sensor 41 is analyzed with reference to this data veil to extract a detection signal for each wireless IC tag. Then, as described above, the position of the wireless IC tag is calculated from the extracted three detection signals.

Further, in the second embodiment, the case where three transmission / reception sensors 41 are arranged on one floor has been described. However, the number may be two or four or more.
In the case where two transmission / reception sensors 41 are provided, these sensors 41 obtain the same detection signal on the left and right sides of the diagonal line. In order to prevent this, the sensor faces one wall of the room. Can be installed.
In the case of four or more, the position of the wireless IC tag may be calculated by narrowing down to three signals among detection signals detected from each sensor under some condition. As a certain condition, if the peak value of the detection signal (response signal) is equal to or higher than a predetermined level and the time from the transmission of the radio signal to the reception of the response signal is three or the shortest, the three are the conditions for extracting three Good.

<< Modification >>
1. Position Detection Unit of Moving Body In the embodiment, the configuration of the position detection unit is the light emitting / receiving unit 91 and the barcode 92. However, the present invention is not limited to this, and various configurations are possible.
Some examples are listed below.
(1) Optical sensor Transmission type sensor As shown in FIG. 16, a photo interrupter arranged so that the light emitting portion 93A and the light receiving portion 93B face each other is used as a detecting portion 93, and the light emitting portion 93A and the light receiving portion 93B A shutter 94 that moves between them is disposed. Here, a detector is provided on the moving body 60 side, and a shutter 94 is provided on the rail body 51.

As the configuration of the shutter 94, FIG. 17A, FIG. 17B, FIG.
Similar to the position detection unit 90 described above, when detecting the position of the moving body 60 at a predetermined position, as shown in FIG. 17A, as shown in FIG. Are provided with through holes 94a, 94a,. At this time, the diameters of the through holes 94a are formed so as to be gradually different so that the diameter (light emission diameter) of the light emitted from the light emitting portion 93A is larger than the through hole 94a having the maximum diameter.
Further, as shown in FIG. 17B, a slit 94b is formed in the shutter 94B. The slit 94b is formed so that its width dimension gradually decreases from one side to the other side in the extending direction of the shutter 94B, and the diameter of light emitted from the light emitting portion 93A is larger than the maximum width dimension. To do.
Furthermore, as shown in FIG. 17C, the outer shape of the shutter 94C is gradually inclined from one side in the extension direction toward the other side, and the diameter of light emitted from the light emitting unit is larger than the maximum width of the shutter 94C. To be the same or larger.

As described above, in the structure of the shutter 94A of FIG. 17A, it is possible to detect that the moving body 60 is present at a predetermined position of the rail body 51, similarly to the position detection unit 90 described above.
In the structure of the shutters 94B and 94C in FIGS. 17B and 17C, the position of the rail main body 51 with respect to the value of the received signal from the light receiving unit 93B is stored in advance in the ROM such as the controller 71 as position information. It is possible to specify the position of the moving body 60 relative to the rail body 51 by calculation from the magnitude of the received signal at the light receiving unit 93B.
In this case, the previous position detection unit 90 performs intermittent position detection, whereas a continuous reception signal is generated by using the optical sensor having the shutter structure shown in FIGS. As a result, the position of the moving body 60 is continuously detected.

Reflective sensor The optical sensor is not limited to a transmissive sensor, and may be a reflective sensor. In this case, as shown in FIG. 18, the light emitting unit 93 </ b> C and the light receiving unit 93 </ b> D have a detection unit 93 ′ and a reflection plate 94 </ b> D that reflects light from the light emitting unit. The shape of the reflecting plate 94D is formed into a shape in which the amount of reflection changes with respect to the extending direction of the portion where the reflecting plate is attached. For example, the slit shape shown in FIG. 17B or the shutter shape shown in FIG.
Furthermore, when it is desired to intermittently detect the position of the moving body 60, a reflector having a different reflection amount is attached to a predetermined position in the extension direction, and when it is desired to continuously detect the position of the moving body 60, the extension is performed. What is necessary is just to stick the reflector of the shape where the amount of reflections changes gradually with respect to a direction.

(2) Magnetic sensor It is good also as a position detection part using a magnetic sensor. In this case, a semiconductor Hall element, a semiconductor magnetoresistive element, or the like is used as the detection portion, and the detection target portion is a magnetized portion or magnet applied to the magnetic material portion.
The magnetized part that becomes the detected part is magnetized at predetermined intervals so that the magnetic field in the magnetized part is different. Thereby, based on the detection signal from a detection part, the position of the moving body 60 in the extending | stretching direction of the rail main body 51 is detected intermittently.
In addition, the magnetized part is not formed at predetermined intervals, but the magnetic field of the magnetized part can be continuously detected from the detector by magnetizing the magnetic field so that it gradually changes in the extension direction. The position of the moving body 60 in the extending direction of the rail body 51 is continuously detected.
On the other hand, when the detected part is a magnet, the magnet is attached to the rail body 51 at predetermined intervals so that the magnetic fields of the magnets are different. Thereby, based on the detection signal from a detection part, the position of the moving body 60 in the extending | stretching direction of the rail main body 51 is detected intermittently.

(3) Other sensors The configuration of the position detection unit of the moving body is not limited to the bar code, the optical sensor, the magnetic sensor, or the like, but relatively detects the position of the moving body 60 with respect to the extending direction of the rail body 51. If there is, it is not limited to these.
In each of the above examples, the case where the detected portion such as the shutter is changed with respect to one sensor has been described, but conversely, the detecting portion having the light emitting portion and the light receiving portion is set at a predetermined position in the extension direction of the rail body 51. It may be provided so as to face each other, and the portion where the light from the light emitting unit is shielded by the moving body may be specified as the position where the moving body 60 has moved.
Furthermore, the photo interrupter described above may be provided for each predetermined position in the extending direction of the rail body 51, and a shutter that blocks the optical path in the photo interrupter may be provided on the moving body 60 side.

2. Detection means for detecting a physical quantity in the vicinity of the power supply rail In each of the above embodiments, the case where an infrared sensor or a transmission / reception sensor is used as the detection means is exemplified, but the present invention is not limited to this, and the distance from the detection target is relative. Any material that can be detected as a physical quantity may be used. For example, there are a magnetic sensor when the detection target has magnetic force, and an illuminance sensor when the detection target emits light.

  Further, in each of the above embodiments, the infrared sensor 40 or the transmission / reception sensor 41 is described as being provided at a predetermined position of the power supply rail 50, but the infrared sensor 40 or the transmission / reception sensor 41 may be provided in the moving body 60. Since the moving body 60 includes the moving body position detection unit 90, if the position of the power supply rail 50 can be grasped by the management server 21, the position of the detecting means can be easily grasped.

  Furthermore, the sensor provided on the power supply rail 50 is not limited to one type, and a different type of sensor may be provided, and the management server 21 may instruct a sensor that performs a detection operation according to a detection target.

3. In the above embodiments, as shown in FIGS. 1, 8 and 12, the case where four power supply rails 50 are installed in parallel on the ceiling is illustrated, but the present invention is not limited thereto, Various installations are possible, and it is possible to install the power supply rails 50 perpendicular to each other, install them at an arbitrary angle, install them vertically on the wall, or install them on the floor. . However, it is necessary to create a data table for specifying the position of the detection means for each floor in the management server 21 each time. In particular, when the power supply rail is installed in a direction perpendicular to the wall, three-dimensional position measurement is possible.

4). Setting of Database In each of the above embodiments, the database stored in the management server 21 is described as being manually input. However, an orientation sensor (geomagnetic sensor) is provided at a predetermined position of the power supply rail 50, and The database may be automatically created by calculating the latitude and lightness based on the output of, and automatically inputting the data of the other power supply rails 50 using this power supply rail as a reference.

5. In the above-described embodiments, the moving body 60 is moved by a rack and a pinion. However, the present invention is not limited to this, and can be configured by various moving mechanisms.
For example, when one moving body 60 is attached to one rail body 51, the rail body 51 and the moving body 60 are provided with a moving mechanism without the moving body 60 itself having a moving mechanism. It becomes possible. For example, the moving mechanism can be configured by a ball bearing structure. This mechanism is constituted by a male screw portion extending in the extending direction of the rail body 51, a female screw portion drilled in the sliding portion 61, and a motor for rotating the male screw portion. In this mechanism, by rotating the male screw portion by a motor, the male screw portion is screwed into the screwed female screw portion, and the sliding portion 61 that is prevented from rotating around the rail body 51 moves. .
Alternatively, pulleys may be provided on both sides of the rail body 51, the moving body 60 may be fixed to a wire installed between the pulleys, and one of the pulleys may be rotated by a motor to move the moving body 60. .

6). In the above embodiments, the power feeding means is configured by the plate-shaped power feeding terminal 54 provided on the rail body 51 and the power receiving terminal 66 provided on the moving body 60 side. However, the terminal portion 66B of the power receiving terminal 66 is provided. Is not limited to a conical shape, and may be a brush structure. In short, any terminal may be used as long as the terminal on the moving body 60 side slides and is electrically connected to the terminal on the rail body 51 side. When one moving body 60 is attached to one rail body 51, the lead wire 55 may be directly connected to the moving body 60. At this time, the moving body 60 is connected to the rail. The lead wire 55 that can move in the extending direction of the main body 51 may have a margin.

7). Method of storing target ID when attaching to moving body In each of the above embodiments, extraction of rail ID, motor ID, and sensor ID is not described. For example, as shown in FIG. A reading unit is provided on the protruding portion 65 side, and a bar code representing information on the light L is attached to a surface (an end surface of the male connector 31 of the light L) facing the reading unit. Thereby, when the light L is attached to the moving body 60, the information of the light L is read.

8). In the above embodiments, the male connector 31 on the light L side is connected to the female connector 65B on the movable body 60 side and is fixed with the penetrating bag-shaped nut 32. Of course, the structure may be such that a mechanical connection is made after electrical connection by a connector connection according to a standard such as GP-IB.

It is a perspective view which shows the position management system by 1st Embodiment. It is a disassembled perspective view of the electric power feeding rail by the 1st embodiment. It is sectional drawing of the electric power feeding rail by the 1st embodiment. It is sectional drawing seen from the arrow IV-IV direction in FIG. It is a figure which shows the to-be-detected part of a position detection part. It is a perspective view which shows the rail main body by the 1st Embodiment. It is sectional drawing which shows the rail main body by the 1st Embodiment. It is a figure which shows the arrangement | positioning relationship of the electric power feeding rail by the 1st Embodiment, and an infrared sensor. It is a figure which shows the electric line supplied to a moving body from the electric structure of a moving body by the same 1st Embodiment, and a feeder. It is a figure which shows the data table memorize | stored in the management server by said 1st Embodiment. It is a table which shows the command signal output from the management server by the 1st embodiment. It is a perspective view which shows the position management system by 2nd Embodiment. It is a figure which shows the data table memorize | stored in the management server by the 2nd Embodiment. It is a flowchart which shows the position calculation process by the 2nd Embodiment. It is a figure explaining the position calculation process by the 2nd embodiment. It is a figure which shows the structure of the different position detection part by a modification. It is a figure which shows the to-be-detected part of a different position detection part by a modification. It is a figure which shows the to-be-detected part of the further different position detection part by a modification.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10,10 '... Position management system, 11 ... Distribution board, 15 ... Master PLC adapter, 21 ... Management server, 40 ... Infrared sensor (detection means), 41 ... Transmission / reception sensor (detection means), 50 ... Feed rail, 51 ... Rail Main body 53 ... Rack 54 ... Power feeding terminal 60 ... Mobile body 62 ... Pinion 66 66 Power receiving terminal 67, 78 ... Substrate 71, 76 ... Controller 72, 77 ... Slave PLC adapter 90 ... Position detector , 91... Light emitting / receiving section, 92... Bar code, 93, 93 ′, 96, detecting section, 94 A, 94 B, 94 C, 97, shutter, 94 D, reflector.

Claims (6)

The rail body,
Provided at a predetermined position in the extending direction of the rail body, a detection unit that issues detects the physical quantity of the peripheral at the predetermined position,
Storage means for storing identification information of the detection means;
A signal transmitting / receiving means for extracting a signal superimposed on a current flowing in the power line, while superimposing a signal on the current flowing in the power line;
When the identification information stored in the header of the signal extracted by the signal transmission / reception means from the current flowing through the power line is the identification information of the detection means stored in the storage means, the detection means detects to perform the operation, and detection control means for causing said signal transmitting and receiving means the processing of superimposing the signal detected by the detecting operation on the current along with the identification information,
A power supply rail characterized by comprising: The rail body,
Detection means provided at a predetermined position in the extension direction of the rail body, and detecting a physical quantity around the predetermined position;
Storage means for storing identification information of the detection means;
A movable body provided on the rail body, movable along the extension direction of the rail body, and to which an electrical device is attached;
Power supply means for supplying power from the rail body to the moving body;
A signal transmitting / receiving means for extracting a signal superimposed on a current flowing in the power line, while superimposing a signal on the current flowing in the power line;
Operation control means for controlling the operation of the electrical device based on the signal extracted by the signal transmitting and receiving means;
When the identification information stored in the header of the signal extracted by the signal transmission / reception means from the current flowing through the power line is the identification information of the detection means stored in the storage means, the detection means detects to perform the operation, and detection control means for causing said signal transmitting and receiving means the processing of superimposing the signal detected by the detecting operation on the current along with the identification information,
A power supply rail characterized by comprising: The power supply rail according to claim 2 ,
Traveling means for running the mobile body along the rail body using the power supplied by the power supply means is provided on at least one of the rail body or the mobile body,
The operation control means controls the traveling of the moving body by the traveling means based on the signal extracted by the signal transmitting / receiving means. A power supply rail according to any one of claims 1 to 3 ,
An information analysis unit that analyzes a physical quantity for calculating a position of a detection target based on a detection signal from the detection unit of the power supply rail, and a position management system comprising:
The information analysis means includes a reference position storage means for storing a predetermined position of a detection means provided on the power supply rail;
A position calculation unit that calculates a position of the detection target from a relative position with a predetermined position of the detection unit stored in the reference position storage unit based on a detection signal from the detection unit. Management system. A power supply rail according to any one of claims 1 to 3 ,
A position management system comprising: the power supply rail and a management server connected via a network,
The management server has information analysis means for analyzing a physical quantity for calculating a position of a detection target based on a detection signal from the detection means of the power supply rail,
The information analysis means includes a reference position storage means for storing a predetermined position of a detection means provided on the power supply rail;
A position calculation unit that calculates a position of the detection target from a relative position with a predetermined position of the detection unit stored in the reference position storage unit based on a detection signal from the detection unit. Management system. The position management system according to claim 4 or 5 ,
The position management system, wherein the detection means includes a mechanism for transmitting or receiving at least one of magnetism, ultrasonic waves, infrared rays, and radio.

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