JPH036929A - Traveling object location monitor system and its apparatus - Google Patents

Abstract

PURPOSE:To surely grasp the location of a traveling object with high efficiency by installing plural fixed sign posts transmitting a radio wave in a specific narrow zone at a prescribed interval within a specific limited range and providing a function calling a specific person on emergency and generating an alarm tone. CONSTITUTION:Plural fixed sign posts 1, 2,...n are installed to plural locations with a specific limited range such as a recreation ground or exhibition grounds at a prescribed interval. Radio wave zones Z1, Z2,...n of the fixed sign posts 1, 2,...n are very narrow ranges each of radius of which is nearly 10m-20m and they are selected so that no radio wave interference takes place. When a traveling object O with a transmitter-receiver carried thereon receives position information of a fixed sign post of its passing radio zone, individual number information se sent as a reply signal. An MCB records the location information of the fixed sign post corresponding to the individual number information of the traveling object. When an urgent call signal is sent from a call base station B, the traveling object O receiving the signal generates an urgent alarm tone.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a mobile body position monitoring method and its device, and particularly to a mobile object position monitoring system and its device, particularly for monitoring the position of young children or the elderly who do not have the ability to judge their own position at amusement parks, expositions, etc. The present invention relates to a mobile position 1 monitoring method and device for monitoring the current position.

[Prior Art] Conventionally, vehicle position detection systems have been developed for determining the current position of a vehicle traveling in geographically complex urban areas and the like. According to these systems, it is possible to quickly and reliably monitor the driving conditions of emergency vehicles such as police cars, transportation and delivery trucks, and the like. Furthermore, by transmitting the monitoring results to a moving vehicle and displaying them on a map of the area, the vehicle driver can also know his or her own location.

2 and 3 schematically show this type of conventional vehicle position detection system.6 The detection system in FIG. 2 is a centralized control bag r! ! (hereinafter MC
A plurality of fixed transmitting signposts I, 2, 3, .

Each transmitting sign post has a transmitter TX with the required output.
I, Tx1. TX3. ...Equipped with TXo, MC
Based on the command from B, the location information of each sign post installation location is transmitted. This message is being sent all the time,
When a vehicle carrying a mobile transceiver (TXRX) passes near any fixed transmitting sign post, it receives position information of the sign post.

Then, the mobile transceiver (TX, RX) sends a predetermined signal radio wave containing self-identification individual number information to the position information of the sign post received by the receiving unit RX from the transmitting unit TX to the monitoring base station (not shown). ), and the current location of the vehicle is confirmed at the base station. This system is called a transmitter distributed system.

On the other hand, the detection system shown in Fig. 3 receives signals transmitted from the vehicle side (!1lRX, RX, RX).
,...RX, each fixed sign post 1.
2.3...n is what is received.

Individual number information for self-identification transmitted from the transmitter TX of a transmitter/receiver (TX, RX) mounted on a running vehicle is transmitted to a plurality of fixed reception sign posts 1.2 installed in urban areas as the vehicle travels. 3...n receivers RX, RX, .
RX, ---RX,.

When received by the wired MC
This system is called a receiver distributed system. In this system, in order for a driver to know the location of his/her own vehicle, he/she has only to have the results processed by the MCB sent to him/her.

By the way, places where an unspecified number of people frequently come and go,
For example, in amusement parks, exhibition halls, department stores, etc., there is a need for a system that can quickly locate lost children and elderly people who have poor situational judgment abilities.

However, as a conventional movement monitoring system, only the above-mentioned vehicle traveling position detection system has been proposed.

For this reason, the actual situation is that this vehicle position detection system has to be applied as is to monitoring the location of such a person, and in this case, problems as described above inevitably occur.

(1) As mentioned above, the purpose of the above system is to automatically detect RR, etc. over a relatively wide area, such as in urban areas. Therefore, the transmission output of the transmitter of the sign post or the mobile transceiver on the moving object side is naturally large, and it is not suitable for detecting moving objects within a relatively narrow range such as an amusement park. Since it is complicated, simply reducing the transmission output to a minimum does not work effectively as a mobile object position detection system.

(2) In particular, since the mobile transceiver is used by infants, the elderly, etc., it is necessary to make it as small and lightweight as possible, and it is necessary to quickly detect a large number of moving objects simultaneously or in a short period of time. However, in the vehicle position detection system described above, which is mounted on a vehicle and only transmits and receives data on a one-off basis,
It is inherently difficult to meet these demands.

[Object of the invention] The present invention has been made in view of the above-mentioned conventional problems,
It can be configured into a small light truck and is effective for preventing children from getting lost in parks, department stores, etc.
The purpose of the present invention is to provide a mobile object position monitoring method and its device that have the function of simultaneously or quickly detecting the current location of a mobile object (mobile object) and emitting an alarm sound to notify surrounding people in case of an emergency. .

[Summary of the Invention] In order to achieve the above object, the present invention provides a plurality of fixed sign posts that are discretely installed within a specific limited range and each have a unique radio wave zone (radio wave range), and the sign post. Connect these fixed sign posts to the post via a wired line.IL1. A mobile object carrying a mobile transmitter/receiver that moves freely at low speed and responds when it enters the radio wave zone of any of the fixed sign posts described in 1iii with the MCB controlled by II. In the mobile position 1 monitoring system, when the mobile object enters the radio wave zone of any corresponding fixed sign post and receives the position information of the fixed sign post, the mobile object responds with its individual number information for identification. It is sent as a signal, and the corresponding fixed sign post in 1iii is received (3
1. Transmit the individual number information of the mobile object and the position information of its own sign post to the Bof MCB via a wired line, and the MCB transmits the individual number information of the mobile object and the position information of the corresponding fixed sign post. and record it with the time,
Every time the mobile object enters the next radio wave zone and the position information of the fixed sign post corresponding to the individual number information of the mobile object changes, the location information and time are updated and recorded, thereby constantly keeping the location of the mobile object. Furthermore, the invention of claim (2) is characterized in that the MCB monitors the MCB.

A paging base equipped with a transmitter/receiver connected via a line and having a radio wave zone covering the entire limited movement range of the mobile body is provided, and the mobile body to be called from the paging base by the MCB emergency call command is provided. The mobile unit transmits a paging signal superimposed with individual number information, and the mobile unit emits an emergency alarm sound at the same time as receiving the paging signal from the paging base, and furthermore, the mobile unit transmits its own individual number information to the nearest fixed sign post. The nearest fixed sign post that has received the individual number information of the mobile unit transmits the position information of the sign post and the individual number information of the mobile unit to the MCB, which is recorded in advance in the MCB. By comparing the position information of a plurality of fixed sign posts with the position information of the nearest fixed sign post, fixing the position information of the same fixed sign post or the nearest fixed sign post, and recording it together with the individual number information of the mobile object. The present invention is characterized in that the location of the mobile object is specifically monitored.

Furthermore, the invention of claim (3) is a device that is installed at predetermined intervals at a plurality of locations that corresponds to a coordinate plane to indicate positions on the coordinate plane, and superimposes unique position information on weak radio waves. a plurality of fixed sign posts each equipped with a transmitter/receiver that constantly transmits signals, and each having its own radio wave zone; an MCB connected to the plurality of fixed sign posts via a wired line and controlling the fixed sign posts; If it moves freely within the above range at low speed and enters the radio wave zone of any of the above fixed sign posts, it will receive the position information of the corresponding fixed sign post and at the same time send out its individual identification number information as a response signal. a mobile body carrying a transceiver having a function, the fixed sign post transmits the received individual number information from the mobile body and the position information of the sign post to the MCB, and thereby the mobile body The invention of claim (4) is characterized in that the current location on the coordinate plane of the MCB can be grasped at all times. A paging base equipped with a transceiver having a radio wave zone covering the entire area is provided, the mobile body has an alarm function of emitting an emergency alarm sound at the same time as receiving a paging signal from the paging base, and the mobile body is located at the nearest The nearest fixed sign post transmits its own individual number information to the fixed sign post using a small power of about 10 mW or less, and the nearest fixed sign post transmits the received individual number information from the mobile object and the position information of the sign post to the MCB. This causes Rk! The present invention is characterized in that it is configured to be able to grasp the current location 1 of the moving object on the coordinate plane.

According to the above configuration, within a specific limited range,
A plurality of fixed sign posts, each with its own radio wave zone, are placed at predetermined intervals at predetermined locations. It forms a radio wave zone.

These radio wave zones are set so that radio wave interference does not occur with each other. When a mobile object carrying a mobile transceiver enters the radio wave zone of any of the above-mentioned fixed sign posts, a wireless connection is established with the corresponding fixed sign post. Upon receiving the position information, the transmitting section of the mobile transceiver transmits the individual number information of the mobile object as a response signal to the corresponding fixed sign post.

The self-recording fixed sign post that received the individual number information of the mobile unit is connected to the M
Transmit to CB. MCB records the location information of the fixed sign post that corresponds to the individual number information of the mobile object, along with the time. However, when the mobile object enters the next radio wave zone, the corresponding fixed sign post naturally changes and its location information is also recorded. As the information changes, update the new location information and time to keep the information up-to-date. By checking this recorded information in the MCB, it is possible to easily check which location the mobile object with which individual number information is located.

Furthermore, a paging base equipped with a transmitter/receiver connected to the MCB by a wired line and having a radio wave zone covering the entire moving range of the mobile body is provided, and in response to an emergency call command from the MCB, a mobile unit having a mobile transmitter/receiver is sent from the paging base to the mobile unit to be called. To the body,
Send an emergency call signal.

The mobile object that has received the emergency call signal emits an emergency alarm sound to notify people around it, and at the same time transmits its own identification number information to the nearest fixed sign post.

m″IJ that received the individual number information of the mobile unit to be called
The fixed sign post displays the individual number information of the mobile object along with its own location information: c! Transmit to MCB. M
In CB, the location of the called mobile object can be confirmed by specifying the location of the nearest fixed sign post.

[Embodiment] Hereinafter, a preferred embodiment to which the moving body position detection method according to the present invention is applied will be described based on the drawings.

FIG. 1 is a schematic configuration diagram of this embodiment. In the figure, components equivalent to those of the conventional device are designated by the same reference numerals, and their explanations will be omitted.

i A plurality of fixed sign posts l, 2, etc. installed at predetermined intervals at multiple locations that correspond to a coordinate plane within a specific limited area such as a garden park or an exposition venue, and indicate positions on the coordinate plane.
・n is the transmitter/receiver (TX, RX,), (TX,
, RX, ), ... (TX, , RX, ,), and its transmitting section TX,, 1'X, , . . . 1- X,
, is constantly transmitting its position information as a transmission channel FC.

Radio wave zone 7 of each fixed sign post l, 2,...n,
,,Z,, ...Zo each has a radius of approximately 10m ~
This is a very narrow range of 20 meters, and is set to prevent interference between radio waves.

Mobile unit O carrying transmitter/receiver v1 (TX, RX) is in the radio wave zone 21.21% of each fixed sign post l, 2...n
... When the receiving unit RX of the mobile object's transmitter/receiver receives the position information of the fixed sign post of the radio wave zone through which the mobile object passes through either Zl, the mobile object moves using the individual number information of the mobile object as a response signal. Transmitter TX of body transceiver
The signal is then closed and transmitted from transmission channel F.

The receiving unit of the fixed sign post transmitter/receiver that receives the mobile body's individual number information at the time when the mobile body 0 passes through the radio wave zone transfers the position information of the sign post and the received mobile body's individual number information to the fixed sign post. is transmitted from the transmitter of the transceiver to the MCB.

The MCB records the position information of the fixed sign post corresponding to the individual number information of the mobile object along with the time. and,
As mobile object O moves to other radio wave zones one after another, that is, each time the position information of the fixed sign post corresponding to the individual number information changes one after another, the MCB updates and records the position information and time, and always keeps it up to date. Information will be recorded and maintained.

Therefore, by checking the information recorded in the MCB, it is possible to easily recognize which person (mobile object) is currently located at which location.

In this way, according to the present invention, it is possible to know the locations of a large number of people at any time, but it may be inconvenient to simply know their locations.

In other words, if you want to summon a specific person (8 moving objects) to a 5-minute call, you would have to go to the location and search for that person using only the above functions.

Another feature of the present invention is that it includes an emergency alarm oscillation function to deal with such situations. That is, a paging base B is provided which is connected to the MCB via a wired line and is equipped with a transceiver (BTXRX) having a radio wave zone that covers the entire limited movement range of the mobile object.

This radio wave zone that covers the entire limited range of movement includes all of the radio wave zones specific to each of the above-mentioned fixed sign posts.

When an emergency call signal is transmitted as channel F from the transmitter BTX of the transmitter/receiver (BTX, RX,) of the calling base B based on the emergency call command of the MCB, it is transmitted to the transmitter/receiver (TX, RX,) of the mobile body. The mobile object O, which receives the signal at the receiving unit RX of the RX), generates an alarm at the same time, and notifies surrounding people with this emergency alarm sound. At the same time, the moving body O transmits the individual number information to the nearest fixed sign post by superimposing it on a weak radio wave with a low output of, for example, IOmW or less, from the transmitter TX of the transmitter/receiver of the mobile body.

The receiver of the nearest sign post that has received the individual number information of the mobile body transmits the position information of its own sign post and the individual number information of the mobile body to the MCB.

In the MCB, the position information of the nearest fixed sign post is compared with the position information of the fixed sign post recorded in advance, and the location information of the same fixed sign post or the nearest fixed sign post is fixed, and the location of 8 moving objects 0 is determined. Record as location.

In this way, the person to be called can be quickly and reliably found using the alarm function.

[Effects of the Invention] As explained above, according to the present invention, a plurality of fixed sign posts that emit radio waves in a specific narrow zone are installed at predetermined intervals within a specific limited range, and a plurality of fixed sign posts that transmit radio waves in a specific narrow zone are installed at predetermined intervals. It is equipped with a function that detects when a moving object enters the vehicle, and also calls a specific person (moving object) and generates an alarm sound in case of an emergency. It is realized that the location of the person can be grasped extremely efficiently and reliably.

Further, since the device itself only needs to have a function of transmitting and receiving weak radio waves, it can be easily miniaturized.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is a schematic configuration diagram of a preferred embodiment to which the moving object position detection method according to the present invention is applied, and FIGS. 2 and 3 are schematic configuration diagrams of a conventional vehicle position detection system. It is. l, 2.・・・ n...Fixed sign post B ・
... Call base 0 ... Mobile MCB ... Centralized control device.

Claims (4)

[Claims] (1) A plurality of fixed sign posts that are installed discretely within a specific limited area and each has its own radio wave zone, and a centralized control device that is connected to the sign posts by a wired line and centrally controls these fixed sign posts. and a mobile body carrying a mobile transceiver that freely moves at low speed and establishes a wireless connection with the corresponding fixed sign post when it enters the radio wave zone of any of the fixed sign posts. In the system, when the mobile object enters the radio wave zone of any corresponding fixed sign post and receives the position information of the fixed sign post, the mobile object simultaneously transmits its individual identification number information as a response signal and takes a corresponding action. The fixed sign post transmits the received individual number information of the mobile object and its own position information to the central control device via a wired line, and the central control device transmits the individual number information of the mobile object and the corresponding fixed sign post. The location information of the mobile body is recorded together with the time, and the position information is updated and recorded each time the mobile body enters the next radio wave zone and the position information of the fixed sign post corresponding to the individual number information changes. A mobile object position monitoring method characterized by constantly monitoring the location. (2) In the monitoring system according to claim (1), the calling base is connected to the central monitoring device via a wired line and is equipped with a transmitter/receiver having a radio wave zone that covers the entire limited movement range of the mobile object. and transmitting a paging signal superimposed with individual number information of a mobile unit to be called from the paging base in response to an emergency call command from the centralized control device, and the mobile unit receives the paging signal from the paging base and simultaneously sends an emergency call signal. An alarm sound is emitted, and the mobile object further transmits its own individual number information to the nearest fixed sign post, and the nearest fixed sign post, which has received the individual number information of the mobile object, combines its own position information and the mobile object's individual number information. The individual number information is transmitted to the central control device, and the central control device compares the position information of a plurality of fixed sign posts recorded in advance with the position information of the nearest fixed sign post to identify the same fixed sign post. Alternatively, a mobile object position monitoring system characterized in that the location of the mobile object is specifically monitored by fixing the position information of the nearest fixed sign post and recording it together with the individual number information of the mobile object. (3) Transmitter/receivers that are installed at predetermined intervals at multiple locations that correspond to a specific limited range on a coordinate plane and indicate positions on that coordinate plane, and that constantly transmit the unique position information superimposed on weak radio waves. A plurality of fixed sign posts each having its own radio wave zone, a central control device connected to the plurality of fixed sign posts via a wired line and controlling these fixed sign posts; When moving freely and entering the radio wave zone of any of the above-mentioned fixed sign posts, the person carries a transmitter/receiver that has the function of receiving the position information of the corresponding fixed sign post and at the same time transmitting the individual number information for identification as a response signal. a moving object, the fixed sign post transmits the received individual number information from the moving object and the position information of the sign post to the central control device, thereby determining the current state of the moving object on the coordinate plane. A mobile object position monitoring device characterized in that it is configured to be able to constantly grasp the location of a mobile object. (4) The device according to claim (3), wherein the calling base is connected to the central management device via a wired line and is equipped with a transmitter/receiver having a radio wave zone that covers the entire specific limited movement range of the mobile object. The mobile body has an alarm function of emitting an emergency alarm sound at the same time as receiving a paging signal from the call base, and the mobile body transmits its own individual number information to the nearest fixed sign post, The nearest fixed sign post transmits the received individual number information from the mobile object and the position information of the sign post to the central control device, thereby making it possible to grasp the current location of the mobile object on the coordinate plane. A mobile object position monitoring device comprising: