JP3502427B2 - Navigation equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation device which is mounted on a moving body such as a ship and outputs navigation information such as the current position of the moving body, a track, and information to a destination, more specifically, its event position. Output function (Here, event means an emergency etc.)

[0002]

2. Description of the Related Art A device of this type is usually provided with an event position output function. For example, when a passenger accidentally falls into the sea while navigating a ship, it is necessary to immediately remember the drop point and go to the rescue, but in this case, it is necessary to send another ship or helicopter to the rescue. However, even if you are going to rescue on that ship, you can not stop suddenly or change the direction suddenly with a large ship,
When you are ready for rescue, you are far away from the drop point, and you will not know the drop point on the sea where there is no target.

Therefore, a conventional device of this kind is provided with a switch called an event switch. For example, when a passenger accidentally falls into the sea while a ship is navigating, a crew member or the like who discovers it presses this switch. The position of the ship (moving body) at the time when the switch is pressed is output as the event position.

[0004]

The event position output function in the conventional navigation device as described above has a problem that an accurate event position cannot be output. That is, in the conventional event position output function, since the position of the moving body at the time of pressing the switch is output, a position shift occurs due to the passage of time from the discovery to the switch operation. In particular, in the case of a ship with a high navigation speed, there has been a problem that a considerable positional deviation occurs.

The present invention has been made to solve the above problems, and an object thereof is to provide a navigation device having an event position output function for outputting a relatively accurate event position.

[0006]

In order to achieve the above object, the present invention is a navigation device having a positioning device for obtaining positioning information of a moving body, and stores the measured positioning information at each measurement time. A positioning memory, and a writing control unit that controls writing of positioning information to the positioning memory,
An operation unit that is operated when an occurrence of an emergency situation is detected, and outputs an emergency situation occurrence signal corresponding to the estimated elapsed time from the occurrence of the emergency situation to the operation, and the output emergency situation occurrence signal In response, the positioning information read back from the time of estimation of occurrence of an emergency or the like is read from the positioning memory, and the control unit that outputs the occurrence position of the emergency or the like based on the positioning information is included.

The navigation device according to the present invention has a memory for storing positioning information in association with time, estimates the time from the occurrence of an event to the operation by the input person, and inputs this estimated time, It is characterized in that it has an event position output function of reading out the position of the moving body at a time point which is traced back by the estimated time from the input time point and outputting it as an event position from the memory.

With the above arrangement, it is possible for the input person to input the estimated elapsed time from the occurrence of an emergency or the like until the operation, and the position where the emergency or the like has occurred can be output relatively accurately.

[0009]

[0010]

In a preferred aspect of the present invention, in a navigation device having a positioning device for obtaining positioning information of a moving body, a positioning memory for storing and storing the measured positioning information for each measurement time, and the positioning memory Write control means for controlling the writing of the positioning information and is operated when an occurrence of an emergency or the like is found, and outputs an emergency occurrence signal corresponding to the estimated elapsed time from the occurrence of the emergency etc. to the operation An operation unit, a wireless transmitter for transmitting the outputted emergency occurrence signal, a wireless receiver for receiving the transmitted emergency occurrence signal, and the received emergency occurrence signal Controlling means for reading out the positioning information traced back at the time of estimating the occurrence of an emergency from the positioning memory and outputting the position where the emergency occurs based on the positioning information. That.

According to the above construction, by using the portable wireless input means by the input person, the elapsed time from the occurrence of an emergency situation to operation can be shortened, and further the operation from the occurrence of emergency situation to The estimated elapsed time can be input, and the position where the emergency situation or the like has occurred can be output more accurately.

In a preferred aspect of the present invention, the operation section is a switch for inputting an estimated elapsed time from the occurrence of the emergency situation to the operation by the number of operations.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A first embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the present invention,
In the figure, 1 is a positioning device using GPS, Loran C, etc., 2 is a position memory (positioning memory), and positioning information sent from the positioning device 1 is stored, for example, for about 30 seconds before the present, It is rewritten every time new positioning information is input. 3 is a control device for controlling the whole, 4 is an event switch, and 5 and 6 are timers.

Next, the operation will be described. The positioning information input by the positioning device 1 such as GPS and Loran C is written in the memory 2 at the timing of the first timer 5 (for example, every 1 second), and the contents of the memory 2 are sequentially updated. Therefore, if the position information to be stored in the memory 2 is, for example, 30 seconds before the current time, the memory 2 need only have a storage capacity of 30 times. Here, when the crew member discovers that the passenger accidentally fell into the sea, the crew member rushes from the spot where the passenger is found to the location where the navigation device is placed, and presses the event switch 4.

In this case, it is general that this crew member accurately stores the time taken from the fall of the passenger until the event switch 4 is pressed. This is because it is the event just before and it is a short time of about 5 seconds.

Therefore, when it is determined that it takes, for example, 5 seconds, this crew member presses the event switch 4 five times.

When the event switch 4 is pressed, the first timer 5 first detects this and stops writing the positioning information to the memory 2, and the second timer 6 causes the event switch 4 to operate.
The number of times the button has been pressed is counted, and this information is output to the control device 3, and the control device 3 outputs the positioning information that is previous by the number of times the event switch 4 has been pressed among the positioning information stored in the memory 2. Read and output this as the event position.

The output of the second timer 6 is also connected to the first timer 5, and the first timer 5 receives this and restarts the updating operation of the memory 2. As described above, it is possible to output the event position relatively accurately.

In the embodiment, not only as a navigation device which is mounted on a moving body such as a ship and uses positioning information, but also when an emergency situation occurs, the moving body of the moving body is operated by the operation of the input person. In a navigation device having an event position output function that records a position and outputs it as an event position, the navigation device has a memory for sequentially storing position information of a moving body in relation to time, and when an event occurs, the input person By estimating the time from the event occurrence to performing the operation, and by inputting the fact that the event has occurred and this estimated time, the position of the moving body at the time traced back by the estimated time from the input point is read from the memory, and the event is read. It is possible to provide a navigation device having an event position output function of outputting as a position.

Next, a second embodiment of the present invention will be described. In FIG. 1, 7 is a wireless receiver, 8 is a wireless transmitter,
9 is a personal switch. Here, in the signal path from the wireless receiver in FIG. 1, the chain double-dashed line indicates the signal path according to the second embodiment.

In the first embodiment, when the crew member or the like finds that the passenger has fallen into water, the event switch 4 is pushed to the place where the device is located, but this time is a predetermined time (about 5 seconds). ) It is explained as something.

However, the faster this time is,
It goes without saying that it is possible to output the accurate event position.

Therefore, in the second embodiment, each crew member is allowed to carry the personal switch 9 equipped with the small radio transmitter 8, and when a person who falls is found, the person who finds the person is personalized on the spot. When the switch 9 is pushed, the wireless receiver 7 receives it and operates the control device 3.

In this case, the positioning data immediately before (or 1-2 seconds before) may be automatically output as the event position.

In the embodiment, not only as a navigation device mounted on a moving body such as a ship and utilizing positioning information, but also when an emergency situation occurs, the moving body of the moving body is operated by the operation of the input person. In a navigation device having an event position output function that records a position and outputs it as an event position, each crew member carries a portable wireless input means, and when an emergency occurs, the crew member who discovers it carries the above-mentioned mobile device. It is possible to provide a navigation device characterized by including means for operating the event position output function by operating the wireless input means of the type to output the current position of the moving body as the event position.

A third embodiment of the present invention will be described. Figure 1
In the signal path from the wireless receiver inside, the broken line indicates the signal path according to the third embodiment.

In the third embodiment, each crew member carries a personal switch 9 equipped with a small radio transmitter 8, and when a person who drops water is found, the finder pushes the personal switch 9 on the spot. Thus, when the wireless receiver 7 receives this and operates the control device 3, the discoverer estimates the time and presses the personal switch 9 for that time, as in the first embodiment.

In the present embodiment, there is provided a memory for sequentially storing the position information of the moving body in association with time,
When an event occurs, the crew member who discovers it estimates the time from the event occurrence to the operation, and operates the portable wireless input means to input the fact that the event occurred and the estimated time. It is possible to provide a navigation device having an event position output function of reading out the position of the moving body at a time point that is traced back by the estimated time from the input time point and outputting the position as an event position.

[0030]

As described above, the navigation device of the present invention has an effect that a relatively accurate event position can be output by inputting the time while the discoverer's memory is accurate. Further, if each crew member carries a personal switch, there is an effect that a more accurate event position can be recorded depending on the situation.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

[Explanation of symbols]

1 Positioning device 2 position memory 3 control device 4 event switch 5 First timer 6 Second timer 7 wireless receiver 8 wireless transmitter 9 Personal switch

Claims (3)

(57) [Claims] 1. A navigation device having a positioning device for obtaining positioning information of a mobile body, which controls a positioning memory for storing and storing the measured positioning information at each measurement time, and writing of the positioning information to the positioning memory. The writing control means, an operation unit that is operated when an occurrence of an emergency or the like is detected, and outputs an emergency occurrence signal corresponding to an estimated elapsed time from the occurrence of the emergency etc. Control means for receiving the emergency occurrence signal, reading the positioning information traced back when the occurrence of the emergency occurrence is estimated from the positioning memory, and outputting the occurrence position of the emergency situation based on the positioning information. And navigation equipment. 2. A navigation device having a positioning device for obtaining positioning information of a mobile body, which controls a positioning memory for storing and storing the measured positioning information at each measurement time, and writing of the positioning information to the positioning memory. The writing control means, an operation unit that is operated when an occurrence of an emergency or the like is detected, and outputs an emergency occurrence signal corresponding to an estimated elapsed time from the occurrence of the emergency etc. A radio transmitter for transmitting an emergency occurrence signal, a radio receiver for receiving the transmitted emergency occurrence signal, and a retroactive process when estimating an emergency occurrence by receiving the received emergency occurrence signal. Navigation device which reads out the positioning information from the positioning memory and outputs the occurrence position of an emergency or the like based on the positioning information. 3. A device according to claim 1 or 2, wherein the operating unit, navigation device, characterized in that a switch for inputting an estimated elapsed time until the operation from the emergency or the like generated in the number of operations .