KR200411154Y1 - A apparatus for measuring true direction and true velocity of a ship using GPS - Google Patents

Abstract

The present invention relates to a true wind direction wind speed measuring apparatus of a ship using GPS, a relative wind detection unit for measuring the relative wind direction of the ship, a relative wind detection unit for measuring the relative wind speed of the ship, and receives GGA serial protocol data from the satellite A GPS module, a converter for calculating true wind direction wind speed data using relative wind direction, relative wind speed, and GGA serial protocol data, a communication module for transmitting the wind direction wind speed data to the outside, and power supply to each of the components. Genuine wind speed wind speed transmitter consisting of a power supply for supplying; And a communication module configured to receive the headwind headwind data from the communication module of the transmitter, a microprocessor for processing headwind headwind numerical values for displaying the received data, a display unit for displaying the processed headpoint, Including a display device composed of a power supply unit for supplying power to each component, the GPS module is installed in the true wind direction wind speed transmitter to display not only the wind direction and wind speed but also bow direction and speed data at the converter in the transmitter. Significantly reduces the signal lines installed between the device, eliminating the need to adjust serial data rates between components, and can be configured as a single system without a separate external converter.

Vessel, Genus, Genus, GPS

Description

A device for measuring true direction and true velocity of a ship using GPS

1 is a schematic view showing the configuration of a prior art wind direction wind speed measuring device.

Figure 2 is a block diagram illustrating the concept of the prior art.

Figure 3 is a schematic diagram showing the configuration of a true wind direction wind speed measuring apparatus using a GPS according to an embodiment of the present invention.

Figure 4 is a block diagram showing the concept of a measuring device according to an embodiment of the present invention.

5 is a block diagram illustrating a general function of a GPS module.

 Explanation of symbols on the main parts of the drawings

10: relative wind detection unit 20: relative wind detection unit

30: GPS module 40: converter

50,70: communication module 100: wind direction wind speed transmitter

200: display device 300: external device

The present invention relates to a true wind direction wind speed measuring device of the ship using GPS, by measuring the wind direction and wind speed of the ship using the relative wind direction and relative wind speed and the bow direction and ship speed data received from the GPS It relates to a device for displaying.

Wind direction wind speed device in ship is a device to measure the direction and strength of wind received by ship. It is used as important data in ship operation, especially in the case of ship using auto pilot equipment, Therefore, it becomes important data to improve efficiency, and it is also important data to determine the operating speed and direction of ship by using wind direction wind speed data even in manual operation. Therefore, ships of more than 3000 tons are basically equipped with a true wind direction wind speed measuring device for continuously checking the actual wind direction and wind speed in real time.

1 is a block diagram schematically showing the configuration of a conventional wind speed wind speed measuring apparatus, Figure 2 is a block diagram showing to show the concept for the prior art.

1 and 2, a conventional wind direction wind speed measuring apparatus includes a wind direction wind speed transmitter 1, a gyro 6, a Doppler speed log 7, an external converter 8, And a display device 9.

In addition, the transmitter 1 includes a relative wind measurement sensor 2, a relative wind measurement sensor 3, a small converter 4, and a serial communication module 5.

The relative wind sensor 2 uses an angle detection sensor, and the relative wind sensor 3 uses a tachometer or encoder sensor.

The small converter 4 embedded in the transmitter 1 is for converting analog signals of relative wind and pulse signals of relative wind obtained from the sensors 2 and 3 into digital data. The controller is built-in, and the measured value of the relative wind and the relative wind is converted into digital data using a microcontroller dedicated program.

The digitally converted data is transmitted to the outside using a serial communication module (RS422 or RS485) installed in the transmitter (1). The external converter 8, which receives relative wind and relative wind data from the transmitter from the communication line, receives two external communication signals, first and second, in addition to the data in order to obtain the wind direction wind speed data.

The first external communication signal is a communication signal for the bow direction, and is a serial data communication signal for the bow direction to which the ship's NMEA protocol is applied from a gyrocompass 6. Here, the gyro is an orientation measuring instrument made using the principle of a gyroscope, and is a device for finding the bow direction of a ship based on true north, regardless of magnetic field, and the NMEA The protocol is an abbreviation of the National Marine Electronics Association and is an international protocol used as a standard for interface protocols in marine equipment.

The second external communication signal is a communication signal for the ship speed, and is a serial digital data communication signal to which the NMEA protocol applied from the Doppler Speed Log 7 which measures the ship speed which is the speed of the ship is applied. Here, the Doppler speed log refers to a device that measures the speed of the ship by the Doppler frequency included in the echo sound emitted from the sea bottom by emitting ultrasonic waves toward the seabed from a wave transmitter installed under the ship.

Therefore, the external converter 8 is obtained from the gyro 6 which can know the heading direction of the ship and the serial data communication signal of the relative wind and relative wind, which are the serial data communication signals to which the three NMEA protocols are applied as mentioned above. The serial data communication signal and the serial data communication signal from the Doppler speed log 7 which can know the speed of a ship are received as input data. The external converter 8 has a built-in microcontroller, and includes a dedicated program for calculating the true wind direction wind speed data using the microcontroller.

An example of the data protocol format according to the NMEA protocol is as follows.

The wind direction wind speed data obtained using the program in the external converter 8 is transmitted to the display device 9, the data storage device VDR, the monitoring device, etc. using the communication port.

The conventional apparatus configured and operated in this way has the following problems.

First, there is a problem that a large number of communication signal lines are required to obtain the true wind direction wind speed data. That is, five lines for wind direction measurement (two lines for reference voltage and three lines for three phase detection for phase difference), three lines for wind speed measurement (power supply, GND line, and pulse signal line), and serial data communication of gyro compass A total of 12 wires are required, including two wires for the signal and two wires for the Doppler Speed Log serial data communication signal.

In addition, since each component is produced by a separate company and the communication specifications are different, adjustment is required when forming the device, and in particular, the gyro and the Doppler speed log have a problem in that the serial data communication speed must be adjusted for each product. .

In addition, since a separate external converter is required to obtain the output of the wind direction wind speed data, not only the installation is complicated but also expensive, and it is difficult to configure a single system.

Accordingly, an object of the present invention is to install a GPS module in a true wind direction wind speed transmitter to process not only the wind direction and wind speed but also bow direction and flux data at the converter in the transmitter at the same time, thereby greatly widening the signal line installed between the display device and the display device. It is to provide a true wind direction wind speed measuring device using a GPS to reduce.

In addition, another object of the present invention is to install a GPS module in the wind direction wind speed transmitter, there is no need to adjust the serial data communication speed between components after installation, and does not require a separate external converter and constitute a single system It is to provide a true wind direction wind speed measuring device using GPS.

A true wind direction wind speed measuring device using GPS according to the present invention for achieving the above object, the relative wind direction detection unit for measuring the relative wind direction of the ship, the relative wind speed detection unit for measuring the relative wind speed of the ship, and GGA serial protocol from the satellite A GPS module for receiving data, a converter for calculating true wind direction wind speed data using relative wind direction, relative wind speed and GGA serial protocol data, a communication module for transmitting the wind direction wind speed data to the outside, and each of the above components. A true wind direction wind speed transmitter comprising a power supply unit for supplying power to the unit; And

A communication module for receiving wind-gust wind speed data from the communication module of the transmitter, a microprocessor for processing wind-wind wind speed values for displaying the received data, a display unit for displaying the processed values, It characterized in that it comprises a display device consisting of a power supply unit for supplying power to the component.

Preferably, the relative wind detection unit uses a resolver sensor to measure the relative wind direction, and the relative wind detection unit uses a magnetic hall sensor to measure the relative wind speed, and the communication module is an RS422 or RS485 digital communication module. Preference is given to using.

The converter obtains the bow direction and ship speed of the ship by using the position and time data of the ship according to the latitude and longitude obtained from the GPS module, and then outputs the relative wind and relative wind data output from the relative wind detection unit and the relative wind speed detection unit. And calculating head wind direction and head wind speed based on true north using bow heading and ship speed data obtained from the GPS module.

As the wind direction wind speed data is transmitted from the communication module of the wind direction wind speed transmitter to the display device, the wind direction wind speed data may be transmitted to an external device, a data storage device, a monitoring device, or both.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the true wind direction wind speed measuring device using GPS according to an embodiment of the present invention.

3 is a block diagram schematically showing the configuration of a wind speed wind speed measuring apparatus using a GPS according to an embodiment of the present invention, Figure 4 is a block showing the concept of a measuring device according to an embodiment of the present invention 5 is a block diagram illustrating a general function of a GPS module.

As can be seen in Figures 3 and 4, the true wind direction wind speed measuring apparatus using a GPS according to an embodiment of the present invention is a relative wind detection unit 10 for measuring the relative wind direction of the ship, and the relative wind speed of the ship The relative wind speed detection unit 20 to measure, the GPS module 30 to receive the GGA serial protocol data from the satellite, and the converter 40 for calculating the true wind direction wind speed data using the relative wind direction, the relative wind speed, and the GGA serial protocol data. A true wind direction wind speed transmitter (100) comprising a communication module (50) for transmitting the wind direction wind speed data to the outside, and a power supply unit (60) for supplying power to each component; And

A communication module 70 for receiving wind-gust wind speed data from the communication module 50 of the transmitter 100, a microprocessor 80 for processing the wind-wind wind speed value for displaying the received data; And a display unit 200 configured to display the processed numerical value, and a power supply unit 60 'for supplying power to the components.

GPS (Global Positioning System) was developed around 1970. It is a cutting-edge system that can receive location and time information from 24 artificial human beings located 20,200km around the earth. It is a system that is useful and actively used in various fields because it is extended to private use for usability. In the present invention, the GPS module 30 is used as a means for grasping the position coordinates on the earth of the ship when the ship is operating.

The serial data communication protocol sent from the GPS module 30 to the device in the ship uses the Global Positioning System Fixed Data (GGA) protocol included in the NMEA communication protocol. The GGA data set contains information about time, longitude and latitude, system characteristics, number of satellites used, and altitude.

As can be seen in FIG. 5, the GPS module 30 includes a receiver 32 including a GPS antenna for receiving a signal received from a GPS satellite, and a central processing unit (CPU) for processing the received data. It is a commonly used module consisting of a data processing section 34 including, and an output section 36 for sending the processed received data to the external device in serial data communication.

The relative wind detection unit 10 uses a resolver sensor to measure the relative wind direction, and the relative wind detection unit 20 uses a magnetic hall sensor to measure the relative wind speed.

The resolver sensor is a type of transformer used for measuring angular motion, and is mainly used because the output is analog but reliable and accurate. The Magnetic Hall Sensor uses the Hall Effect, which is a phenomenon that a potential difference occurs in a vertical direction of a current and a magnetic field when a current flows in a conductor or a semiconductor and a vertical magnetic field is applied thereto. It is a sensor that is mainly used for high precision devices because it has good proportionality and can be miniaturized.

The converter 40 has a built-in microprocessor (not shown) and a program to calculate the bow direction and ship speed of the ship by using the ship's position and time data according to the latitude and longitude obtained from the GPS module 30. The true wind direction and the true north wind based on the true north using the relative wind and relative wind data output from the relative wind detection unit 10 and the relative wind detection unit 20 and the bow direction and ship speed data obtained from the GPS module 30. Calculate the wind speed. A data calculation program using a microprocessor embedded in the converter 40 can be easily made and used by those skilled in the art.

In addition, the communication module 50 uses an RS422 or RS485 digital communication module, and the protocol of the module 50 uses NMEA0183. In the GPS device, the NMEA0183 protocol is an international standard, and most GPS devices support the NMEA0183 interface.

Therefore, the wind direction wind velocity data calculated by receiving data from the relative wind measurement unit 10, the relative wind measurement unit 20, and the GPS module 30 to the converter 40 installed in the wind direction wind velocity transmitter 100. Since data is transmitted through serial data communication (RS422 or RS485), the number of signal lines required between the display device 200 is reduced to a total of 4 lines including a power line, and in a peripheral device, a separate converter as in the prior art. Is not necessary.

On the other hand, the wind direction wind speed data in the communication module 50 of the wind direction wind speed transmitter 100 may be transmitted to the display device 200 as described above, but at the same time the data stored in the external device 300 It may be transmitted to a device (VDR: Voyage Data Recorder) or a monitoring device to be stored or displayed.

Referring to the operation of the wind speed wind speed measuring device using the GPS according to an embodiment of the present invention configured as described above are as follows.

First, the relative wind velocity data measured using the resolver sensor in the relative wind velocity measurement unit 10 is sent to the converter 40, and the relative wind velocity data measured using the magnetic hall sensor in the relative wind velocity measurer 20. Is sent to the converter 40.

Meanwhile, the GPS module 30 receives a signal received from a GPS satellite, processes the received data, and then converts the received received data into serial data communication using a Global Positioning System Fixed Data (GGA) protocol. Send to The data format according to the GGA protocol is shown in Table 1 below.

The GGA protocol includes output data such as the maximum number of traceable satellites, the position of the ship, and the current time. The serial data communication output by the GGA protocol is as follows.

As illustrated above, the bow direction data of the ship may be obtained from latitude and longitude data included in the GGA serial communication protocol output from the GPS module 30. The GGA serial communication protocol data is input to the converter 40 which is a digital converter built in the wind direction wind speed transmitter 100 at regular time intervals, for example, one second intervals.

Therefore, the converter 40 obtains the bow direction data of the current ship by using the built-in microcontroller and bow direction calculation program using the GGA serial communication data input from the GPS module 30, and the relative wind measurement unit 10 The true wind direction data is calculated by the built-in program using the relative wind direction data inputted from) and the bow direction data.

In addition, ship speed data, which is the speed of a ship, can also be obtained from latitude and longitude data and time data included in the GGA serial communication protocol output from the GPS module 30. Since the GGA serial communication protocol data is input from the GPS module 30 at regular time intervals, for example, at a time interval of 1 second, the converter 40 stores the position coordinates of the ship included in the input data, and after 1 second, the GPS is stored. By comparing the positional coordinates of the ship received from the module 30 with the positional coordinate data of the previous vessel, the speed of the vessel can be obtained by differentiating the positional coordinate displacement with time. This is done by a microprocessor and a program built into the converter 40.

Accordingly, the converter 40 obtains ship speed data of the current ship by the ship speed calculation program using the GGA serial communication data input from the GPS module 30, and receives the relative wind speed data input from the relative wind speed measurement unit 20. The wind speed data is calculated by using the built-in program using the above-described flux data.

The wind direction data and wind speed data calculated by the converter 40 are sent to the communication module 50, and the communication module 50 transmits the above data to the display device 200. Will be sent to. Here, the above data are transmitted from the communication module 50 of the wind direction wind speed transmitter 100 to the display device 200 as well as to the data storage device VDR, which is an external device 300, or to a monitoring device installed in a ship. Can be transmitted and stored or displayed.

The display device 200 calculates the true wind direction and the true wind speed by the built-in microprocessor 80 and the numerical calculation program using the data input to the communication module 70, and then sends the numerical value to the display unit 90. The display unit 90 displays the true wind direction and the true wind speed numerically. The numerical calculation program using the microprocessor 80 embedded in the display device 200 can be easily made and used by those skilled in the art.

Finally, when the vessel is anchored, the last heading data calculated at the time of the final operation of the vessel is stored in the converter 40 before the power source 60, 60 'is cut off. It will be used as initial data for the heading when resuming operation.

The measuring device of the present invention constructed and operated as described above has a total of four signal lines, including a power line, required between the true wind direction wind speed transmitter 100 and the display device 200, and processes data in a peripheral device. There is no need for a separate converter.

According to the true wind direction wind speed measuring device using the GPS according to the present invention, by installing a GPS module in the wind direction wind speed transmitter, the heading direction and ship speed data as well as the wind direction and wind speed are processed at the same time by the converter in the transmitter. Significantly reduce the signal lines installed in the system, there is no need to adjust the serial data communication speed between the components, it can be configured as a single system without a separate external converter.

Claims (6)

Relative wind detection unit for measuring the relative wind direction of the ship, relative wind detection unit for measuring the relative wind speed of the ship, GPS module for receiving GGA serial protocol data from the satellite, using the relative wind direction, relative wind speed and GGA serial protocol data A true wind direction wind speed transmitter comprising a converter for calculating true wind direction wind speed data, a communication module for transmitting the wind direction wind speed data to the outside, and a power supply unit for supplying power to each component; And A communication module for receiving wind-gust wind speed data from the communication module of the transmitter, a microprocessor for processing wind-wind wind speed values for displaying the received data, a display unit for displaying the processed values, A true wind direction wind speed measuring device using a GPS comprising a display device comprising a power supply device for supplying power to a component. The apparatus of claim 1, wherein the relative wind detection unit uses a resolver sensor to measure the relative wind. The apparatus of claim 1, wherein the relative wind speed detection unit uses a magnetic hall sensor to measure the relative wind speed. According to claim 1, The converter calculates the heading direction and ship speed of the ship using the position and time data of the ship according to the latitude and longitude obtained from the GPS module, and then the relative wind output from the relative wind detection unit and the relative wind detection unit A true wind direction wind speed measuring device using GPS, wherein the wind direction and wind speed based on the true north are calculated using wind direction and relative wind data and bow direction and ship speed data obtained from the GPS module. The apparatus of claim 1, wherein the wind direction wind speed data is transmitted from the communication module of the wind direction wind speed transmitter to the display device and to an external device. The apparatus of claim 5, wherein the external device is at least one of a data storage device and a monitoring device.

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