Hydrant display system and hydrant and navigation device

Description: TECHNICAL FIELD [Detailed description of the invention]

【0001】

[Technical field to which the invention belongs]

The present invention relates to a system that contributes to fire extinguishing activities, and more particularly to a system that efficiently teaches the position of a fire hydrant.

【0002】

[Conventional technology]

Conventionally, a navigation system has been put into practical use that displays the position of the fire site and the current position of the fire engine on a liquid crystal display device together with a map, and guides the route to the fire site so that the destination can be reached as soon as possible. It has been transformed.

【0003】

[Problems to be Solved by the Invention]

However, in the case of a normal fire engine, a fire hydrant is required to carry out fire extinguishing activities, and a system that can quickly know the position of the fire hydrant near the fire site is desired. Further, 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 the fire extinguishing activity may be delayed. Therefore, it is desired to realize a system that can efficiently teach a usable fire hydrant.

【0004】

[Means for solving problems]

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

【0005】

Further, it is characterized by having a fire hydrant code for identifying the fire hydrant and a transmission means for transmitting status data indicating the usage state of the fire hydrant. Further, it has a detecting means for detecting the open / closed state of the lid of the fire hydrant and an activation means for putting the transmitting means into an operating state when the detecting means detects that the lid of the fire hydrant is open. It is a feature.

【0006】

Further, based on the position detecting means for detecting the position of the vehicle, the map displaying means for displaying the map, and the position detected by the position detecting means, the position of the vehicle is displayed on the map displayed on the map displaying means. The vehicle position display means to be displayed, the position data of the fire extinguisher and the usage status data are input, and the position of the fire extinguishing plug and the usage status are displayed on the map displayed on the map display means based on the input data. It is characterized by consisting of a display means.

【0007】

Further, a fire site input means for inputting the position of the fire site and a display activation means for activating the fire hydrant position display means when the vehicle approaches the fire site input by the fire site input means are provided. It is characterized by.

【0008】

[Example]

Hereinafter, examples of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the present invention. 1 is a fire hydrant installed on roads, etc. to supply water for extinguishing fires. Reference numeral 2 denotes a transmitter that transmits an identification signal of the fire hydrant at a specific frequency by removing the lid of the water outlet of the fire hydrant. In this embodiment, the identification signal is transmitted by removing the lid of the water outlet of the fire hydrant. The state of the lid of the water outlet of the fire hydrant can be detected by a switch (the pressure is released and the contact opens when the lid is removed) that is pressed by the attached lid and the contact is closed.

【0009】

3 is an antenna for transmitting radio waves from the transmitter. And there are (N) such fire hydrants in various parts of the city. 4 is a navigation device installed in a fire engine. 7 is a GPS (Global Positioning System) that measures the position of a vehicle (own vehicle) using satellites. 8 is a vehicle speed sensor unit that measures the moving speed of the own vehicle, and is composed of sensors that detect the rotational speed of the axle by magnetism or light. 9 is a gyro that measures the orientation of the 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】

Reference numeral 10 denotes a display unit that displays a map, the position of the own vehicle, the position of the fire hydrant, and the status, and is composed of a display such as a liquid crystal display or a CRT. Reference numeral 11 denotes an operation unit for operating the navigation device 4, for example, for performing position input and operation instruction, and is composed of a push button switch, Joyce Tech, and the like. Reference numeral 12 denotes a map data storage unit consisting of a CD-ROM player or the like that reproduces the map data stored in the compact disc (CD) 14, and outputs necessary map data according to instructions. Reference numeral 13 denotes a control unit that processes signals from each unit and controls each component, and is composed of a microcomputer or the like.

【0011】

Next, the operation of this embodiment will be described. When a disaster such as a fire occurs and a fire engine is instructed to be dispatched, the fire engine is dispatched to operate the on-board navigation device 4. The display unit 10 of the navigation device 4 displays a map centered on, for example, a mark indicating the fire site (the mark is displayed by manually inputting the location of the fire site according to the fire information), and the display range thereof. The position of the own vehicle is displayed when the own vehicle is running inside (Fig. 3A). In addition, the control unit 13 calculates the route from the current position of the own vehicle and the position of the fire site and displays it on the map. Then, the control unit 13 switches between a map centered on the position of the own vehicle and a map centered on the fire site, and the scale thereof, depending on the operating state of the operation unit 11. Then, when traveling toward the fire site, the mark of the fire engine (own vehicle) on the map gradually approaches the fire site. Then, when approaching a predetermined distance from the fire site, the display screen switches to the screen of the house display (the display of each house and the display of the fire hydrant) (Fig. 3A).

【0012】

On the other hand, since the lid of the water outlet of the fire hydrant in use is 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 the fire hydrant is in use, and the display state of the fire hydrant mark displayed on the residential map of the display unit 10 is changed to the used state. Change according to the situation (in use = black circle mark, unused = white circle mark). In this embodiment, it is determined whether or not the fire hydrant is in use based on the presence or absence of a signal from the fire hydrant transmitter 2.

【0013】

By recognizing such a display, the fire engine can quickly extinguish the fire by selecting a fire hydrant that is close to the fire site and is not in use. Next, the processing of the control unit (microcomputer) 13 will be described with reference to the flowchart of FIG. The control unit 13 starts processing when the navigation device 4 is operated. In step S1, it is determined whether or not the fire site has been set, and if the setting has been made, the process proceeds to step S2, and if the setting has not been made, the process proceeds to step S9. Then, in step S9, normal navigation processing for performing normal route guidance and map display is performed, and the process returns to step S1.

【0014】

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

【0015】

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

【0016】

In step S7, a flag indicating that the ID code has been received is set for the fire hydrant. That is, it stores the fire hydrant in use, and stores the used state of each fire hydrant (near the fire site) in the memory, whether it is in use or unused. In step S8, the display form of the used fire hydrant is changed so that the used and unused fire hydrants can be distinguished (Fig. 3B). The display form can be changed, for example, by displaying the fire hydrant in use in white and the unused fire hydrant in black, that is, by inverting or changing the color.

【0017】

In this embodiment, the ID code is transmitted only when the fire hydrant is in use so that the usage status of the fire hydrant can be known, but conversely, the ID code is transmitted only when the fire hydrant is not in use. Often, the ID code of the fire hydrant and data indicating the usage status may be transmitted at all times. In that case, if a solar cell 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 installation is easy.

【0018】

[Effect of the invention]

As described in detail above, in the present invention, it is possible to grasp in advance whether or not a fire hydrant is used and to carry out an efficient fire extinguishing activity.

[Simple explanation of drawings]

[Figure 1]

Configuration diagram showing an embodiment of the present invention [Figure 2]

Flow chart showing the processing performed by the control unit 13. [Fig. 3]

The figure which shows the screen displayed on the display part 10. [Explanation of symbols]

1 Fire hydrant 2 Transmitter 3 Transmission antenna 4 ... Navigation device 5 Reception antenna 6 Receiver 7 GPS 8 Vehicle speed sensor 9 ... Gyro 10 Display