JPH102744A - Hydrant display system and hydrant and navigation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize the system which can efficiently instruct a usable hydrant, by transmitting the hydrant code for identifying the hydrant and the status data, indicating the using state of the hydrant from the hydrant, and displaying the position and the using state of the hydrant on the map displayed on a display part. SOLUTION: When a fire engine is moved on and a navigation device 4 is operated, the map, wherein the mark which indicates the firing spot is indicated, is displayed on a display part 10. When own vehicle is running in the display region, the position of own vehicle is displayed. A control part 13 computes the path based on the present position of own vehicle and the position of the firing spot and displays the path on the map. When the mark of own vehicle on the map approaches the firing spot gradually and approaches the specified distance, the display screen is switched to the screen displaying the domiciles. The navigation device 4 receives the signal from a transmitter 2 of the hydrant 1 with a receiver 6, judges whether or not the hydrant is under use, changes the displaying state of the mark of the hydrant displayed on the domicile map of the display part 10 corresponding to the using state and displays the result.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for contributing to fire fighting, and more particularly to a system for efficiently teaching the position of a fire hydrant.

[0002]

2. Description of the Related Art Conventionally, the position of a fire site and the current position of a fire truck are displayed on a liquid crystal display device together with a map, and the route to the fire site is guided so that the user can arrive at a destination as soon as possible. Navigation systems have been put to practical use.

[0003]

However, in the case of a normal fire engine, a fire hydrant is necessary to perform a fire fighting operation.
A system that can quickly determine the position of a fire hydrant near a fire spot is desired. In addition, even if the position of the fire hydrant is known, if the fire hydrant is used by another fire engine, it is necessary to search for an unused fire hydrant again and move the position of the vehicle, so that fire extinguishing activities may be delayed. Therefore, it is desired to realize a system capable of efficiently teaching usable hydrants.

[0004]

SUMMARY OF THE INVENTION In order to solve such a problem, the present invention provides a fire hydrant having a hydrant code for identifying a hydrant and transmission means for transmitting status data indicating the use state of the hydrant, and a display unit. While displaying a map on
It is characterized by comprising an in-vehicle display device that receives a transmission signal from the hydrant and displays the position and use state of the hydrant on a map displayed on the display unit.

[0005] The apparatus is characterized in that it has a transmission means for transmitting a hydrant code for identifying the hydrant and status data indicating the usage state of the hydrant. In addition, the fire hydrant lid includes a detecting unit that detects an open / closed state of the hydrant lid, and a starting unit that activates the transmitting unit when the detecting unit detects that the hydrant lid is open. Features.

[0006] Further, a position detecting means for detecting a position of the vehicle, a map displaying means for displaying a map, and the vehicle on a map displayed on the map displaying means based on the position detected by the position detecting means. Vehicle position display means for displaying the position of the fire hydrant, and inputting the position data and use state data of the hydrant, and displaying the position and use state of the fire hydrant on a map displayed on the map display means based on the input data. Fire hydrant position display means.

The fire scene input means for inputting the position of the fire scene, and display activation means for activating the fire hydrant position display means when the vehicle approaches the fire scene input by the fire scene input means. It is characterized by having been provided.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram showing one embodiment of the present invention.
Reference numeral 1 denotes a fire hydrant provided on a road or the like for supplying water for extinguishing a fire or the like. A transmitter 2 transmits the identification signal of the hydrant at a specific frequency by removing the lid of the water hole of the fire hydrant. In the present embodiment, the transmitter transmits the identification signal by removing the lid of the water hole of the fire hydrant. In addition, the state of the lid of the water outlet of the fire hydrant can be detected by a switch pressed by the attached lid and the contact closed (the contact is released by opening the lid and the contact is opened).

Reference numeral 3 denotes an antenna for transmitting a radio wave from the transmitter. And, such fire hydrants are provided (N pieces) at various places in the city. Reference numeral 4 denotes a navigation device mounted on a fire truck. Reference numeral 7 denotes a GPS (global positioning system) that measures the position of a vehicle (own vehicle) using a satellite. Reference numeral 8 denotes a vehicle speed sensor unit for measuring the moving speed of the vehicle, which is constituted by a sensor for detecting the rotational speed of the axle by magnetism or light. Reference numeral 9 denotes a gyro for measuring the direction of the own vehicle. Reference numeral 6 denotes a receiver, which receives a fire hydrant identification signal transmitted from the transmitter 2 of the fire hydrant 1.

[0010] 10 is a map, the position of the vehicle, the position of the fire hydrant,
A display unit for displaying a state, which is composed of a display such as a liquid crystal display or a CRT. 11 is an operation of the navigation device 4,
For example, it is an operation unit for performing position input and operation instruction, and includes a push button switch, a joystick, and the like. Reference numeral 12 denotes a map data storage unit comprising a CD-ROM player or the like for reproducing map data stored on a compact disk (CD) 14, and outputs necessary map data according to instructions. Reference numeral 13 denotes a control unit that performs processing of signals from each unit and controls each component, and is configured by a microcomputer or the like.

Next, the operation of this embodiment will be described. When a disaster such as a fire occurs and the fire engine is instructed to start, the fire engine is started and the navigation device 4 mounted thereon is operated. The display unit 10 of the navigation device 4 displays a map centered on, for example, a mark indicating a fire spot (the mark is displayed by manually inputting the location of the fire spot according to the fire information), and its display range. When the own vehicle is traveling inside, the position of the own vehicle is displayed (FIG. 3A). Further, the control unit 13 calculates a route from the current position of the own vehicle and the fire spot position and displays the route on a map. Then, the control unit 13 switches the map to a map centered on the position of the vehicle and a map centered on the fire spot according to the operation state of the operation unit 11, and changes the scale of the map. Then, when traveling toward the fire site, the fire engine (own vehicle) mark on the map gradually approaches the fire site. Then, when approaching a predetermined distance from the fire site, the display screen is switched to a screen of house display (display of each house and display of fire hydrant) (FIG. 3A).

On the other hand, since the fire hydrant in use has the lid of the water outlet removed, the transmitter 2 transmits the identification (ID) code of the fire hydrant. In the navigation device 4, the signal from the transmitter 2 is received by the receiver 6, it is determined whether or not the hydrant is in use, and the display state of the hydrant mark displayed on the housing map of the display unit 10 is set to the use state. The display is changed accordingly (in use = black circle mark, unused = white circle mark). In this embodiment, whether or not the hydrant is in use is determined based on the presence or absence of a signal from the hydrant transmitter 2.

[0013] The fire truck is close to the scene of the fire by observing such a display. In addition, the fire engine can be stopped by selecting a fire hydrant that is not being used, and the fire extinguishing activity can be quickly performed. Next, the processing of the control unit (microcomputer) 13 will be described with reference to the flowchart of FIG. The control unit 13 is a navigation device 4
The process is started when is operated. In step S1, it is determined whether or not the setting of a fire spot has been performed. If the setting has been performed, the process proceeds to step S2. If the setting has not been performed, the process proceeds to step S9. In step S9, normal navigation processing for performing normal route guidance and map display is performed, and the process returns to step S1.

In step S2, route guidance to the fire spot is performed, and the process proceeds to step S3. This process is the same as the normal route guidance, and displays the current position, the fire spot, and the route to the fire spot on the map in a state corresponding to the operation state of the operation unit 11 (FIG. 3A). In step S3, it is determined whether or not the position of the vehicle has reached a predetermined range (distance) from the fire spot. If it is within the predetermined range, the process proceeds to step S4, and if not, the process returns to step S2. .

In step S4, the map to be displayed is switched to a low-scale house map, a detailed map of the vicinity of the fire site is displayed, and the flow proceeds to step S5. In step S5, a fire hydrant is displayed on the detailed map so that the position of the fire hydrant can be identified.
This process is performed based on the fire hydrant position information recorded on the CD-ROM. In step S6, the fire hydrant ID
It is determined whether an (identification) code has been received. If it has been received, the process proceeds to step S7, and if not, the process proceeds to step S8.

In step S7, a flag indicating that the fire hydrant has received the ID code is set.
In other words, the fire hydrants in use are stored, and the use state of each fire hydrant (near a fire spot) is used or not used is stored in the memory. In step S8, the display form of the used hydrant is changed so that the used and unused hydrant can be distinguished (FIG. 3B). The change of the display form
For example, a fire hydrant in use can be displayed in a white outline, and an unused fire hydrant can be displayed in a black outline, that is, by inverting or changing the color.

In this embodiment, the ID code is transmitted only when the fire hydrant is in use so that the use state of the fire hydrant can be known.
The D code may be transmitted, and the ID of the hydrant
The code and the data indicating the use state may be constantly transmitted. In this case, if a solar battery is used as a power source, there is no problem of running out of the battery, and there is no need for wiring or the like, so that the installation becomes easy.

[0018]

As described above in detail, in the present invention, the use of a fire hydrant is grasped in advance to enable efficient fire fighting activities.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing one embodiment of the present invention.

FIG. 2 is a flowchart showing processing performed by a control unit 13;

FIG. 3 is a view showing a screen displayed on a display unit 10;

[Explanation of symbols]

 1 ... fire hydrant 2 ... transmitter 3 ... transmission antenna 4 ... navigation device 5 ... reception antenna 6 ·········· Receiver 7 ···························································· Display unit

Claims (5)

[Claims] 1. A hydrant having a hydrant code for identifying a hydrant and transmission means for transmitting status data indicating a use state of the hydrant, a map is displayed on a display unit, and a transmission signal from the hydrant is received. A fire hydrant display system comprising a vehicle-mounted display device for displaying the position and use state of the fire hydrant on a map displayed on a display unit. 2. A fire hydrant comprising transmission means for transmitting a fire hydrant code for identifying a fire hydrant and status data indicating a use state of the fire hydrant. 3. A detecting means for detecting an open / close state of a lid of the fire hydrant, and a starting means for setting the transmitting means to an operating state when the detecting means detects that the lid of the fire hydrant is open. The fire hydrant according to claim 2, wherein the fire hydrant is provided. 4. A position detecting means for detecting a position of the vehicle, a map displaying means for displaying a map, and the vehicle on a map displayed on the map displaying means based on the position detected by the position detecting means. Vehicle position display means for displaying the position of the fire hydrant, and inputting the position data and use condition data of the hydrant, and displaying the position and use condition of the fire hydrant on a map displayed on the map display means based on the inputted data. And a fire hydrant position display means. 5. A fire scene input means for inputting a position of a fire scene, and display activation means for activating the fire hydrant position display means when the vehicle approaches the fire scene input by the fire scene input means. The navigation device according to claim 4, wherein the navigation device is provided.