JP2003092777A - Display device for position of mobile terminal in premises - Google Patents

Abstract

PROBLEM TO BE SOLVED: To display a current position of a mobile terminal 20 (t) when a user of the mobile terminal falls down due to leakage of gas or the like, fall down state and also abnormity of a job environment such as gas leakage. SOLUTION: When a fall-down information discrimination means 6 of a mobile terminal position display device 60' detects fall-down information indicative of fall-down state of the mobile terminal on the basis of contents of mobile terminal information received from the mobile terminal, a mobile terminal position information display means 3' displays the position information of the mobile terminal and fall-down state of the mobile terminal, when a job environment abnormity information discrimination means 7 detects job environment abnormity information denoting that the surrounding of the mobile terminal reaches the job environment abnormity state on the basis of contents of the mobile terminal information received from the mobile terminal, the mobile terminal position information display means 3' displays the position information of the mobile terminal and occurrence of the job environment abnormity around the mobile terminal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a premises communication system such as a premises radio telephone system used for work communication in a premises such as a steel mill, and more particularly to a portable communication system when a failure occurs such as a fall of a user of a portable device. The present invention relates to a machine position display device.

[0002]

2. Description of the Related Art The structure and operation of a local communication system will be described with reference to FIG. FIG. 6 is a block diagram of a local communication system to which the present invention is applied. 20 in the figure
(1) to 20 (m) are portable devices held and moved by an operator, 40 (1) to 40 (n) are wireless base stations, 50 is a wireless control device, 60 is a portable device position display device, and 70. Is a private branch exchange connected to the radio controller 50, and is a public communication network 9
Control between 0 and 0. One wireless control device 50 has
A plurality of wireless base stations 40 (1) -40 (n) are connected. Here, m and n are subscripts indicating the maximum numbers of portable devices and wireless base stations, respectively, and for example, m = 256 and n = 6.
There are four local communication systems.

Communication is performed between the portable devices 20 (1) to 20 (m) and the radio base stations 40 (1) to 40 (n) by weak radio waves. The area where one wireless base station 40 (s) can communicate with the portable device is called a zone 80 (s). Zone 8
0 (s) spreads in a substantially concentric circle centering on the installation position of the wireless base station 40 (s), but the radius of the zone 80 (s) depends on the radio environment around the wireless base station 40 (s). different. On the premises of steelworks, etc., so that it is possible to talk on the phone regardless of the position of the portable device (communication with any wireless base station is possible regardless of the position of the portable device. As described above), the plurality of radio base stations 40 (1) to 40 (n) are arranged at appropriate intervals after measuring the electric field strength.

In such a local communication system, a call from the portable device 20 (t) in the zone 80 (s) is exchanged by the radio controller 50 via the radio base station 40 (s). , Another portable device 20 (t ′), another telephone (not shown) connected to the public communication network 90, or a telephone (not shown) connected to the wireless control device 50 by wire, to perform communication. A way is secured. In addition, a call from another telephone is sent to the wireless control device 5.
0, the mobile device 20 (t) is connected to the mobile device 20 (t) via the wireless base station 40 (s) to make an incoming call and a communication path is secured.

Next, the portable device position display device 60 will be described. This display device is a device for grasping and displaying the position of the holder of the portable device 20 (t) in units of zones 80 (s). The mobile device 20 (t) has an identification code (hereinafter, referred to as an identification code uniquely assigned to the mobile device at regular time intervals (for example, 10 seconds)).
This identification code is called "portable device ID". ) Is emitted. The radio control device 50 determines which radio base station 4
At 0 (s), information about which portable device ID is received, that is, in which zone the portable device 20 (t) exists, is transmitted to the portable device position display device 60 as portable device information. The portable device position display device 60 visualizes and displays the existing position of the portable device based on the received portable device information.

FIG. 7 is a block diagram showing the configuration of a conventional portable device position display device 60. In the figure, 1 is a portable device information receiving means, 2 is a portable device position information storing means, 3 is a portable device position information display means, 5 is an operating condition of the wireless control device 50 and an operating condition of the portable device position display device 60 itself. The control information input means 4 for the operator of the present device to input control information such as the above is the wireless control device 5 if the input control information defines the operating conditions of the wireless control device 50.
It is a transmission means for transmitting a command to 0.

[0007]

However, when telephone calls are communicated between workers in a vast premises such as a steelworks by using such a premises communication system, the usage situation in the steelworks will be described as an example. Then, normally, one worker carries the portable device 20 (t) and performs operation / maintenance inspection of the in-plant equipment. This worker may accidentally fall down during work (for example, remove his legs from the stairs while moving), be injured due to some accident and fall down and operate the portable device 20 (t) by himself When it becomes impossible (hereinafter, such a state is referred to as "falling state")
There is. When such a fall state occurs, even if the current position of the portable device 20 (t) is displayed, it is not known that this worker is in the fall state, and thus there is a problem that the rescue is delayed. It was

In order to solve such a problem, Japanese Patent Laying-Open No. 7-255081 discloses a portable unit position display device in which a fall detector is provided in a portable unit, and when the fall is detected, the fall information is transmitted via a line control unit to a line controller. The invention of a portable device position display device has been proposed in which the portable device position display device, which has transmitted this to the user and has received the fall information, displays the portable device in a fall state in addition to the normal position display information.

However, in the above-mentioned conventional invention, it is possible to confirm from the display that the operator is in a fall state, but it is unclear in what state the operator fell during the work. For example, leakage of gas, etc. (Hereinafter, such a state is referred to as an abnormal working environment state), which may cause a fall. When such a state occurs, even though the current position of the portable device 20 (t) is displayed, it is not clear that the worker is in the abnormal working environment state, so that the prevention of the secondary disaster is prevented. From the point of view, there was a problem that rescue was delayed.

[0010]

The basic idea of the present invention is that in the local area communication system, the current position of the portable device 20 (t) is grasped in units of zones 80 (s) as described above. Focusing on the fact that, with telecommunications technology, to speed up the rescue. The purpose of the present invention is to
Specifically, by providing an on-premise portable device position display device that displays the position information of the portable device in which the overturned state and the abnormal working environment have occurred, it is possible for the person concerned to rush to the site of the overturned or abnormal working environment. If possible, speed up rescue of the injured. In addition, as an abnormal working environment,
It means an environmental condition in which a rescue tool such as a tool for coping with or a tool for safety protection such as leakage of gas, high temperature, dust generation, radiation generation, etc. is required.

[0011]

According to the present invention, a plurality of portable devices on a premises are connected to a wireless control device of a local communication system for performing wireless communication, and are transmitted from the portable devices via the wireless control device. Portable device information receiving means for receiving portable device information, portable device position information storing means for storing portable device position information included in the portable device information received from the portable device information receiving means, and portable device position information storage And a portable unit position information display unit for visualizing and displaying the portable unit position information stored in the means.

The indoor portable device position display device according to the present invention is added in advance when the portable device is tilted and falls into a fall state based on the contents of the portable device information received by the portable device information receiving means. When the specified fall information is detected,
A predetermined work to be added when the surroundings of the portable device become an abnormal working environment based on the contents of the portable device information received by the portable device information receiving device and the fall information determining device that outputs the fall information. When detecting the environmental abnormality information, a work environment abnormality information determination means for outputting the work environment abnormality information, and the portable device position information display means, when the fall information is input from the fall information determination means, When the display of the portable device position information stored in the portable device position information storage means indicating that the portable device is in an overturned state is performed, and the work environment abnormality information is input from the work environment abnormality information determination means. The portable device stored in the portable device position information storage means is configured to display that the surroundings of the portable device are in a work environment abnormal state.

Therefore, according to the on-premises portable device position display device of the present invention, the portable device is in the overturned state based on the fall information and the work environment abnormality information included in the portable device information received from the portable device. Since a display indicating that the environment around the portable device is in an abnormal working environment is displayed, quick rescue measures can be taken.

Here, in the on-premise portable device position display device according to the present invention, a map information storage means is further provided in which the map of the premise is digitized and previously stored, and the portable device position information display means is a bitmap. A graphic display device of a format, and displays a map of the position where the portable device exists, which is searched and input from the map information storage device based on the stored contents of the portable device position information storage device on the display screen of the graphic. In addition, the portable device may be configured to perform a display indicating that the portable device is in an overturned state or the environment around the portable device is in an abnormal working environment. As a result, it is possible to intuitively and easily recognize the location of the site where the portable device is in the overturned state or the work environment around the portable device is in an abnormal state, and the rescue procedure can be executed more quickly.

Further, in the on-site portable device position display device according to the present invention, further, rescue tool information storage means is provided in which rescue tool information associated with the type of the abnormal working environment is digitized and stored in advance. The portable device position information display means displays a display indicating a rescue tool necessary to rescue the portable device holder when the portable device is in a fall state and the surroundings of the portable device are in an abnormal working environment. It may be configured as follows. Accordingly, it is possible to appropriately and promptly prepare the tools necessary for the rescue operation and execute the rescue measures safely and effectively.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be specifically described based on Examples. FIG. 1 is a configuration block diagram of a portable device position display device 60 ′ according to a first embodiment of the present invention. Here, the portable device position display device 60 ′ corresponds to the portable device position display device 60 in FIG. 6 used in the description of the prior art,
The internal structure is changed. The configuration of the conventional portable device position display device 60 has been described with reference to FIG.
The same components as those in FIG. 7 will be described with the same reference numerals.

As shown in FIG. 1, the portable device position display device 6
0'stores the portable device information receiving means 1 sent from the portable device via the wireless control device 50, and the position information of each portable device based on the portable device position information included in the received portable device information. Portable device position information storage means 2, portable device position information display means 3'which visualizes and displays the stored portable device position information, and determines whether the received portable device information is tipping information. If it is the fall information, the fall information determining means 6 for notifying the portable device position information display means 3'to that effect and the work environment by determining whether or not the received portable device information is the work environment abnormality information. If the information is abnormal information, it has a work environment abnormality information discriminating means 7 for notifying the portable device position information display means 3'to that effect. The control information transmission means 4 and the control information input means 5 are the same as the portable device position display device 60 shown in FIG.

The portable unit 2 used in this system
The configuration of 0 (t) is shown in FIG. In the figure, 21 is an antenna for communicating with the radio base station 40 (s), 22 is a radio unit having a radio circuit, 23 is a fall detection unit for detecting a fall state, 24 is a gas leak, etc. It is a signal detection unit for detecting a signal from the gas detector 25 for detecting. Although the gas detector is connected to the mobile device here, the gas detector may be incorporated in the main body of the mobile device. A mercury switch or the like utilizing gravity is used for the fall detection unit 23, and when the fall state, that is, when the portable device is tilted, a signal to that effect is sent to the wireless unit 22 and the fall information is included via the antenna 21. The mobile device information is issued. In addition, the signal detector 24 uses the gas detector 2
When 5 detects a signal to be sent by detecting a gas leak or the like,
When there is a leak, that is, when gas leaks around the portable device, a signal to that effect is sent to the wireless unit 22, and portable device information including work environment abnormality information is emitted via the antenna 21.

As the fall information and the work environment abnormality information, a telegram used for communication between the normal portable device 20 (t) and the radio base station 40 (s) (for example, the portable device 20 (t) is called). In addition to the "calling telegram" for notifying that there was, a certain specific telegram was arranged as a "falling telegram" or "work environment abnormal telegram".

The fall message transmitted from the portable device 20 (t) is received by the wireless base station (40 (s) in FIG. 6) of the zone 80 (s) in which the portable device 20 (t) is located, and the wireless base station The station 40 (s) notifies the wireless control device 50 of this information. As a result, the wireless control device 50 receives the fall message and the work environment abnormality message and receives the wireless base station 40.
It can be specified for each zone managed by (s).
The wireless control device 50 immediately notifies the portable device position display device 60 ′ that the fall message and the work environment abnormal message have been received.

FIG. 3 shows an embodiment of the received message 30 received from the wireless controller 50 by the portable unit position display device 60 '. 31, portable device ID 32,
The information of the message type 33 is included. Zone No. Reference numeral 31 denotes a zone in which the mobile device is located, and corresponds to the number of the wireless base station 40 (s) currently communicating with the mobile device 20 (t). The portable device ID 32 is an ID that identifies the portable device that is performing the communication. The message type 33 is a type code obtained by encoding information on the state of the portable device and the surrounding environment, and is implemented by adding the following type code, for example.

[0022] Message type “0” …… Normal mobile device location registration request, Message type "1" ... fall information display request, Message type “2” …… Emergency alarm display request, Message type "3" ... Work environment abnormality information display request,

Here, the fall information means that the message type is "1".
And the work environment abnormality information is the information whose message type is "3". When the message type is “2”, it is an emergency report display request. The emergency alert means that when some kind of emergency state different from the fall state occurs, the corresponding signal is wirelessly signaled by operating the key provided on the portable unit of the portable unit 20 (t) holder, and the portable unit position is transmitted. It is displayed on the display device 60 '.

The operation of the portable unit position display device 60 'will be described more specifically according to the configuration of the peripheral device and the format of the received message as described above. As shown in FIG. 1 showing a portable device position display device 60 ′ according to the embodiment of the present invention, reference numeral 1 is a portable device information receiving means for receiving a telegram 30 (FIG. 3) from the wireless control device 50. A communication control circuit of a predetermined communication method (synchronous method or asynchronous method) and a temporary storage area (reception buffer) of the received message 30 are formed between the control apparatus 50 and the control apparatus 50.

Reference numerals 6 and 7 shown in FIG. 1 are a fall information discriminating means and a work environment abnormality information discriminating means newly provided by the present invention. The fall information determining means 6 is composed of, for example, a microcomputer that operates by a program method and a memory that stores an operation program thereof. The operation program of the microcomputer is composed of, for example, the following premises. (1) A step of receiving the received electronic message 30 from the portable device information receiving means 1. (2) A step of transferring the received received electronic message 30 to the portable device position information storage means 2. (3) Referring to the message type 33 of the received message 30 received,
If the content of the message type 33 is a fall information display request, a step of notifying the portable device position information display means 3 '.
Is. The fall information determining unit 6 sends a message 30 from the wireless controller 50.
There is an effect that the fall information included in is quickly recognized. Further, in the case of the program control, there is an effect that even if the format of the received message is changed, it can be easily dealt with by modifying the program.

The work environment abnormality information discriminating means 7 is also composed of, for example, a microcomputer and a memory similarly to the fall information discriminating means 6, and the operation program of the microcomputer has the following constitution, for example. (1) A step of receiving the received electronic message 30 from the portable device information receiving means 1. (2) A step of transferring the received received electronic message 30 to the portable device position information storage means 2. (3) A step of referring to the message type 33 of the received message 30 and, if the content of the message type 33 is a work environment abnormality information display request, notifying the portable device position information display means 3 '. Is. The work environment abnormality information discriminating unit 7 has an effect of promptly recognizing the work environment abnormality information included in the message 30 from the wireless control device 50. Further, in the case of the program control, there is an effect that even if the format of the received message is changed, it can be easily dealt with by modifying the program.

Next, the portable position information storage means 2 will be described. The portable device position information storage means 2 is configured on a rewritable memory, and the zone number of the portable device 20 (t) currently exists in units of the portable device 20 (t). 31 is a table storing 31. Zone No. included in the received message 30 from the wireless control device 50. 31 and a portable device ID 32 are stored and stored in a table format as a pair. This table shows a received message 30 sent from the wireless controller 50 according to the movement of the portable device 20 (t).
It is updated one by one according to the change of contents.

Next, the portable position information display means 3'will be described. The portable device position information display means 3'is, for example, a CR
It is composed of a T-type character information display device and its control circuit. When a notification indicating that the fall information display request or the work environment abnormality information display request is received as the received message 30 is received from the fall information determination means 6 and the work environment abnormality information determination means 7, these contents are visualized, The fact that it is the fall information or the work environment abnormality information is displayed on the character display device.

Further, since the fall state and the abnormal working environment state are emergency situations in terms of human life, it is necessary to call more attention. Therefore, the display may be highlighted differently from the normal display, or a voice alarm may be issued at the same time.
In addition, the portable unit position information display means 3'displays the zone number. Three
The name of the actual building / premise work facility corresponding to 1, the name of the owner corresponding to the portable device ID 32, the emergency contact information, etc. may be displayed at the same time. These are a highlighting circuit, an audible sound generating circuit such as a buzzer, a zone number. It can be realized by adding a storage means in which a building name and a holder name corresponding to a portable device are stored in advance to the control circuit. The portable device position information display means 3'has an effect of easily visually recognizing the place where the fall state has occurred, and being able to quickly rescue the fallen person.

The portable device position information display means 3'requires a rescue tool such as an oxygen cylinder for rescue operation when the working environment is abnormal. Therefore, in addition to the above display, it is necessary for safe and appropriate rescue operation. You may make it display the various rescue tools. These can be realized by providing the working environment abnormality information with a data structure capable of identifying the type of the abnormality, and by adding to the control circuit a storage means that stores in advance the type information of the rescue tool corresponding to the type of the abnormal working environment state. .

Further, the portable unit position information display means 3'is not limited to the above-mentioned fall state and abnormal working environment state, and the portable unit position information storage unit 2 stores the portable unit ID 32 in accordance with the instruction from the portable unit control information input unit 5. Corresponding to the zone number. Three
1 can be read and displayed.

Next, a second embodiment of the present invention will be described with reference to the drawings. FIG. 4 is a configuration block diagram of a portable device position display device 60 ″ according to the second embodiment of the present invention. In this embodiment, a map information storage means 8 for storing computerized map information of the premises is added to the construction of the premises portable equipment position display device 60 'in the first embodiment, and the portable equipment position information display means is added. The configuration of 3'is changed in order to display the bitmap information of the map information in the form of a bitmap, and the portable device position information display means 3 '' is provided.

The map information storage means 8 stores a map of a premises such as a steel mill to which this premises communication system is applied, in a storage device such as a magnetic disk storage means, an optical disk storage means or a CD-ROM. When digitizing the premises map, the map may be electronically read using a digitizer or the like, or may be created by CAD.

The portable device position information display means 3 '' includes the first
In this embodiment, the character display device is used, but in this case, a graphics display device of the bitmap format and a control circuit are included as components. When a notification indicating that the fall information display request has been received as the received message 30 is received from the fall information determination unit 6, the control circuit of the received message 30 includes the zone number. 31 and its portable device ID 32 are visualized and displayed on the graphics display device to the effect that they are fall information. In addition, even when a notification indicating that the work environment abnormality information request is received as the reception message 30 is received from the work environment abnormality information determination means 7, the control circuit causes the zone No. 1 included in the reception message 30. 31 and its portable device ID 32 are visualized and displayed on the graphics display device to indicate that it is work environment abnormality information.

At the time of this display, the control circuit of the graphics display device searches the map information storage means 8 for a map of the surrounding area including the zone in which a fall or work environment abnormality has occurred, reads it out, and displays it in a built-in bitmap format. Transfer to the memory and display the graphics. Here, for a zone where a fall or a work environment abnormality has occurred, the display attribute (attribute) of the corresponding area is set to be different from the surrounding display attributes so that the corresponding zone on the map is highlighted in a circle, for example. Good.

FIG. 5 shows a display example on the graphics display device. A zone 80 (s) managed by the relay connection device 40 (s) that receives the fall information or the work environment abnormality information is displayed in a circle while displaying a map of the premises near the position where the fall state or the work environment abnormality state occurs. Is displayed by hatching, and the extension number of the portable device,
It is displayed that the name of the user who is using the portable device and the gas leakage state (for example, CO gas detection), which is the content of the abnormal work environment, are detected.

In the case of a fall, the zone 80 managed by the relay connection device 40 (s) that received the fall information.
(S) may be displayed by hatching in a circle, and further, the extension number of the portable device, the name of the user who is using the portable device, and the message “fall” such as a message of “fall” may be displayed. The fall state and the abnormal working environment state may be displayed together. In addition to the method of displaying the occurrence of the fall state and the abnormal working environment state as a message, or in addition to the method of displaying the circle of the generation zone 80 (s) by hatching or by changing the color, the occurrence state of the fall state is described. And the occurrence of an abnormal working environment may be displayed so that the difference between these states can be displayed in a distinguishable manner.

As described above, by displaying the digitized map on the graphics display device of the bitmap format, it is possible to intuitively recognize the fall position and the position where the work environment abnormality occurs, and the faller can quickly Can be rescued, and by displaying the contents of the abnormal work environment,
It has the effect of preventing secondary disasters.

Further, as shown in FIG. 4, the tool information storage means 9 is constructed by changing the storage area in the map information storage means 8.
Alternatively, the tool information storage means 9 may be provided by a memory different from the map information storage means 8, and the tool information storage means 9 is necessary for taking rescue measures according to the type of working environment abnormality such as gas leakage. It is a collection of information on various rescue tools. The rescue tool information may be in the form of a name of the rescue tool in characters, or may be in a graphic format in which the rescue tool is marked.

When the portable device position information display means 3 '' receives a notification from the work environment abnormality information discriminating means 7 that the work environment abnormality information request is received as the received message 30,
The control circuit controls the zone number included in the received message 30. 31
Based on the type information of the abnormality included together with the portable device ID 32 or the portable device ID 32 thereof, the location of the abnormality and the content of the abnormality as well as the tool information necessary for the rescue procedure for the abnormality are searched for and read from the tool information storage unit 9. To display. By displaying the necessary rescue tool information in this way, it is possible to quickly prepare the necessary tools and to carry out an appropriate and safe rescue operation, which also has the effect of preventing secondary disasters.

[0041]

As described above, according to the present invention,
It is possible to provide a portable position display device on the premises that displays the position information of a portable device that has fallen or an abnormal working environment, and it is possible to rescue the personnel involved by rushing to the site where the fall or environmental abnormality occurred. There is an effect that can be quickly. In addition, by displaying the occurrence site of falls and work environment abnormalities in association with the electronic campus map,
There is an effect that it is possible to intuitively and easily recognize the place where the fall and the abnormal work environment occur and to speed up the rescue. In addition, when the environment around the portable device is in an abnormal working environment, by displaying the information of the rescue device necessary to rescue the holder of the portable device, it is possible to bring the rescue device necessary for rescue. There is an effect that it is possible to properly and safely carry out rescue activities and prevent secondary disasters.

[Brief description of drawings]

FIG. 1 is a configuration block diagram of a portable device position display device according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram showing an example of a portable device used in a local communication system.

FIG. 3 is a configuration diagram showing an example of a telegram between a portable device position display device and a wireless control device.

FIG. 4 is a configuration block diagram of a portable device position display device according to a second embodiment of the present invention.

FIG. 5 is a diagram showing a display example in the portable device position display device of the present invention.

FIG. 6 is a configuration diagram showing an example of a local communication system to which the present invention is applied.

FIG. 7 is a configuration block diagram of a conventional portable device position display device.

[Explanation of symbols]

1: portable device information receiving means, 2: portable device position information storing means, 3 ', 3'': portable device position information displaying means, 4: control information transmitting means, 5: control information input means, 6: fall Information discriminating means, 7: Working environment abnormality information discriminating means, 8: Map information storing means, 9: Rescue tool information storing means, 20
(1), 20 (2), 20 (t), 20 (t '), 20
(M): Portable device, 23: Fall detection unit, 24: Signal detection unit, 25: Gas detector, 30: Received message, 31: Zone No. , 32: portable device ID, 33: message type, 40
(1), 40 (2), 40 (s), 40 (n-1), 4
0 (n): radio base station, 50: radio control device, 60,
60 ', 60'': portable device position display device,

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) H04Q 3/58 101 H04Q 9/00 301B 5K101 7/38 311K 9/00 301 7/04 C 311 D H04B 7 / 26 106B (72) Inventor Takayuki Hamada 3-14-20 Higashi-Nakano, Nakano-ku, Tokyo Inside Hitachi Kokusai Electric Co., Ltd. (72) Inventor Masahiro Yagi 5-3, Tokai-cho, Tokai-shi, Aichi Shin Nippon Steel Corporation F-Term in Nagoya Works (reference) 5K024 AA79 CC11 DD01 FF01 FF05 GG01 GG05 GG10 5K027 AA11 CC08 HH26 5K048 BA23 DB01 DC01 EB13 FB03 FB09 FC01 HA01 HA02 5K049 FF23 FF23 FF23 FF23 FF23 FF23 FF23 FF16 H13 FF44 FF13 FF23 FF23 FF23 FF44 LL12 MM02 NN18 RR12 SS07 TT06 UU16

Claims (3)

[Claims] 1. A portable device in which a plurality of portable devices on a premises are connected to a wireless control device of a local communication system for performing wireless communication and receive portable device information sent from the portable device via the wireless control device. Information receiving means, portable device position information storing means for storing portable device position information included in the portable device information received from the portable device information receiving means, and portable device position stored in the portable device position information storing means In a local portable device position display device having portable device positional information display means for visualizing and displaying information, the portable device is tilted from the content of the portable device information received by the portable device information receiving means into a fall state. When the predetermined fall information to be added is detected, the fall information determining means for outputting the fall information and the portable device information received by the portable device information receiving means are used to determine the circumference of the portable device. When a predetermined work environment abnormality information added when the work environment abnormal state is detected is provided, the work environment abnormality information determination means for outputting the work environment abnormality information is provided. The means, when the fall information is input from the fall information determining means, performs a display indicating that the portable device of the portable device position information stored in the portable device position information storage means is in a fall state, When the work environment abnormality information is input from the work environment abnormality information determining means, a display indicating that the surroundings of the portable device of the portable device stored in the portable device position information storage means are in the abnormal working environment state. A portable terminal location information display device, which is configured to perform the following. 2. The in-premise portable device position display device according to claim 1, further comprising map information storage means in which the in-premise map is digitized and previously stored, and the portable device position information display means is in a bit map format. A graphic display device for displaying a map of the position where the portable device exists, which is searched and input from the map information storage device based on the stored contents of the portable device position information storage device on the graphic display screen. At the same time, an on-premise portable unit position display device configured to display that the portable unit is in a fall state or the surroundings of the portable unit are in an abnormal working environment. 3. The portable device position display device according to claim 1 or 2, wherein the rescue tool information storage means stores electronically the rescue tool information associated with the type of the abnormal working environment state and stored in advance. The portable device position information display means, when the portable device is in an overturned state, and the surroundings of the portable device are in an abnormal working environment, a rescue tool necessary to rescue the portable device holder is provided. A portable device position display device configured to perform the display shown.