JPH07110380A - Underwater gps - Google Patents

Abstract

PURPOSE:To make it possible to exactly measure the absolute position with a simple operation and improve measurement reliability by accepting the output data of a global positioning system(GPS) sensor and an ultrasonic sensor and adding the relative position of a receiver to the absolute position of the receiving point. CONSTITUTION:A GPS sensor 1, an ultrasonic sensor 2, a data processing device 3 and transmitter 4 are loaded on a boat. First, the longitude, lattitude and altitude showing the absolute position of the boat is measured by the sensor 1. Simultaneously, the direction and distance from the boat showing the relative position of the receiver 5 that is under water and put on by a user, are measured with ultrasonic using the sensor 2. Those data from the sensors 1, 2 are output to the data processing device 3 and the longitude, lattitude and altitude showing the absolute position of the receiver 5 put on by the user are calculated. The data showing the absolute position of the receiver 5 which was calculated by the processing device 3 are transmitted under water from the transmitter 4 to the use putting on the receiver 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underwater global positioning system, that is, an underwater GPS.

[0002]

2. Description of the Related Art GPS is a system for receiving a signal transmitted from a GPS satellite and measuring the position (latitude, longitude, altitude) of oneself on land, at sea or in the air.

[0003]

The GP seen in the conventional example
In S, the radio wave transmitted from the GPS satellite is greatly attenuated when it propagates in water, so it is difficult to receive the radio wave, and therefore it is impossible to measure the position in water. Here, the present invention, in view of the impossibility of measuring the position in the water of the conventional example, was made to break the bottleneck, provided with an ultrasonic sensor for measuring the position of the receiver in the water, An object of the present invention is to provide an underwater GPS that measures the relative position of an underwater receiver via an ultrasonic sensor and adds the relative position to the absolute position of GPS sensor data on the water surface.

[0004]

In order to achieve this object, an underwater GPS according to the present invention receives a signal emitted from a satellite constituting the GPS and outputs a latitude, longitude, and G that can measure altitude and output the data
The PS sensor and ultrasonic waves are emitted into the water, and the reflected waves are captured to measure the direction and distance indicating the relative position from the emission point of the receiver in the water. Both the acoustic wave sensor and the output data of the GPS sensor and the ultrasonic wave sensor are received, and the relative position of the receiver is added to the absolute position of the reception point to calculate the absolute position of the receiver of the calculation result. A data processing device that outputs data representing latitude, longitude, altitude, or depth, a transmission unit that receives the data of the data processing device and can transmit it by sound waves in water, and data by the sound waves sent from the transmission unit. Is a GPS underwater GPS configured by the receiver for displaying and storing the data.

[0005]

The present invention is configured as described above, and
The S / sensor, the data processing device, the ultrasonic sensor, and the transmitter are placed on the water, for example, on a ship, and the user mounts the receiver underwater so that the reflected wave from the receiver can be reflected by the ultrasonic wave emitted from the ultrasonic sensor. The direction and distance [relative position] to the user (receiver) based on the ultrasonic sensor that is captured is known, and this data is given to the data processing device,
The position (absolute position) of the user (receiver) is calculated by adding it to the position data [absolute position] on the ship from the GPS / sensor, and this is transmitted to the water by a strong sound wave from the transmitter onboard. The receiver allows the user to know his position.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an underwater G according to an embodiment of the present invention.
It is a block diagram which shows the circuit structure of the principal part of PS.

[0008] 1 receives the transmission radio wave emitted by GPS,
A GPS sensor that outputs the absolute position of that point as data, 2 emits ultrasonic waves into the water, receives the reflected wave from the measured object, and measures the relative position from the direction of the measured object and the distance to it. An ultrasonic sensor that outputs these data,
3 is a data processing device for introducing both data from the GPS sensor 1 and the ultrasonic sensor 2 and performing an addition operation to output the absolute position of the measured object in the water. 4 is a strong acoustic wave for the calculation result from the data processing device 3. Is a receiver having a display unit for receiving and transmitting the data propagated by the sound wave from the transmission unit 4, and a storage unit for storing the data.

The operation of the underwater GPS configured as described above will be described below. Here, the GPS sensor 1, the ultrasonic sensor 2, the data processing device 3, and the transmission unit 4
Is assumed to be loaded on a ship on the water.

First, the GPS / sensor 1 measures the latitude, longitude and altitude indicating the absolute position of the ship. At the same time, the ultrasonic sensor 2 measures the direction and distance from the ship, which represents the relative position of the receiver 5 worn by the user in the water, by ultrasonic waves. Each data of the GPS / sensor 1 and the ultrasonic sensor 2 is output to the data processing device 3.
The data processing device 3 calculates the latitude, longitude, and altitude (depth) indicating the absolute position of the receiver 5 worn by the user, based on the data of both the GPS sensor 1 and the ultrasonic sensor 2.

The data indicating the absolute position of the receiver 5 calculated and created by the data processing device 3 in this manner is transmitted from the transmitter 4 to the user wearing the receiver 5 in the water by strong sound waves. It The receiver 5 can receive the sound wave data from the transmitter 4, display the data on the display included in the receiver 5, and store the data in the storage.

As described above, the propagation of the radio wave is attenuated by the synergistic action of the GPS sensor 1 on the ship, which is in charge of the radio waves transmitted from the GPS satellites, and the ultrasonic sensor 2 which measures the ultrasonic waves up to the object to be measured underwater. It is possible to accurately measure and store the absolute position of the object to be measured in water of large size.

[0013]

As is apparent from the above description, according to the present invention, by combining the GPS sensor of the conventional example with the ultrasonic sensor, the position of one's own can be confirmed even in the case of being in the water as well as being in the land. To be able to do. Also, by storing the measured point in water,
It can be important data for the next time you go to that point. Thus, the present invention has a particular effect that accurate absolute position measurement can be performed by a simple operation with a GPS sensor in water, which is impossible in the conventional example, and therefore the reliability of underwater position measurement is significantly improved. be able to.

[Brief description of drawings]

FIG. 1 is a block diagram showing a circuit configuration of a main part of an underwater GPS according to an embodiment of the present invention.

[Explanation of symbols]

1 GPS [Global Positioning System] / Sensor 2 Ultrasonic Sensor 3 Data Processor 4 Transmitter 5 Receiver [Measured Point]

Claims (1)

[Claims] 1. A global positioning system sensor capable of receiving a signal emitted from a satellite constituting a global positioning system, measuring a latitude, a longitude and an altitude indicating an absolute position of a reception point and outputting the data, An ultrasonic sensor that emits sound waves into the water and captures the reflected waves to measure the direction and distance indicating the relative position from the launch point of the receiver in the water and output the data, and the global sensor described above. It receives both data of the positioning system sensor and the output data of the ultrasonic sensor, adds the relative position of the receiver to the absolute position of the receiving point and calculates it, and the latitude and longitude that represent the absolute position of the receiver of the calculation result. , A data processing device that outputs data of altitude or depth, and accepts the data of the above data processing device. And possible transmission unit transmits the ultrasonic Les in water, catch data by sound wave sent from the transmitting unit, water GPS, characterized in that it consists of an above-described receiver storing and displaying the data.