JPH0594709U - Target monitoring system - Google Patents

Abstract

(57) [Summary] [Structure] A rate gyro sensor comprising means for detecting a rotational angular velocity in the horizontal direction, means for obtaining azimuth data by integrating the detected rotational angular velocities, and means for wirelessly transmitting the azimuth data to the bridge side. 1 is provided in the housing of the binoculars 2. The bridge side device displays the received azimuth data. [Effect] By using the target azimuth measuring device shown in the figure, the observer performs marine monitoring and monitors the target, so that the azimuth data of the target can be monitored on the bridge side. Evacuation maneuver will be carried out promptly.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a target monitoring system that monitors other targets from a ship or the like to ensure navigation safety of the ship.

[0002]

[Prior Art]

 For example, when a moving body such as a ship navigates a narrow waterway, a collision prevention radar or the like is generally used to monitor a dangerous ship, but a small boat such as a yacht, a boat, a fishing boat or a fishing boat cannot be easily detected. Therefore, in addition to radar observation, the observer navigates while watching the sea with binoculars, etc.If a dangerous vessel is found, immediately look at the repeater compass and read the direction of the dangerous vessel to the operator. By contacting the ship, the ship operator is informed of the direction of the dangerous ship, and in response to this, the ship operator conducts evasive maneuvering.

[0003]

[Problems to be solved by the device]

 However, when navigating while watching the sea with binoculars, etc., even if a dangerous ship is found, it is not possible to immediately know the direction of the dangerous ship. You must read the direction of the ship and contact the operator. This delayed the discovery of dangerous ships and the communication of bearings to the operator, which was a cause of delay in avoidance maneuvering. Especially when changing needles, it is important to check the orientation of the dangerous vessel, and a device that can easily and quickly grasp the direction of the dangerous vessel was desired.

The purpose of this invention is to monitor the sea with binoculars or the like, and when a target such as a dangerous ship is discovered, the target monitoring system can immediately transmit the direction of the target to the operator. To provide.

[0005]

According to a first aspect of the present invention, there is provided a target monitoring system including a rotational angular velocity detecting means for detecting a rotational angular velocity in the horizontal direction, and a detection value of the rotational angular velocity detecting means for integration. Azimuth data generating means for obtaining data and a data sending means for wirelessly transmitting the azimuth data, a target azimuth measuring instrument provided in binoculars or a telescope, and azimuth data of the target for receiving the azimuth data. The bridge side device is provided with a data receiving means for extracting the data and a target orientation data display means for displaying the orientation data of the target extracted by the data receiving means.

Further, the target object monitoring system according to a second aspect of the present invention is a rotational angular velocity detecting means for detecting a rotational angular velocity in the horizontal direction, and an azimuth data generating means for integrating the detection values of the rotational angular velocity detecting means to obtain azimuth data. And a data transmitting means for wirelessly transmitting the azimuth data, a target azimuth measuring instrument provided in binoculars or a telescope, and a data receiving means for receiving the azimuth data and extracting the azimuth data of the target. Danger of judging a target based on the angle between the target azimuth data display means for displaying the azimuth data of the target extracted by the data receiving means and the angle between at least the azimuth data of the target and the heading of the ship. The bridge-side device includes a target determination unit and an alarm generation unit that issues an alarm when the dangerous target determination unit determines a dangerous target.

[0007]

[Action]

 A target monitoring system according to claim 1 of the present invention comprises a target direction measuring device used by a monitor and a bridge side device provided on the bridge side. The target direction measuring device includes a rotational angular velocity detecting means and a direction. The data generating means and the data transmitting means are provided in the binoculars or the telescope. On the other hand, the bridge side device comprises a data receiving means and a target direction data display means. The rotation angular velocity detection means detects the horizontal rotation angular velocity of the binoculars or the telescope, and the azimuth data generation means integrates the detection value of the rotation angular velocity detection means to generate azimuth data. The data transmission means wirelessly transmits the obtained bearing data to the bridge. The data receiving means on the bridge side receives the azimuth data, and the target azimuth data display means displays the azimuth data of the target obtained by the reception. As described above, the observer uses the binoculars or the telescope to monitor the sea in the same manner as in the past, but, for example, by resetting the binoculars or the telescope toward the reference direction (for example, true north) in the initial state. , The rotation angle from the reference bearing is obtained as bearing data. Therefore, when a dangerous vessel is found by sea surveillance, the bearing data can be transmitted, so that the bridge side can immediately read the bearing data of the dangerous vessel from the displayed contents.

The target monitoring system according to claim 2 also comprises a target direction measuring machine and a bridge side device, and the operation of the target direction measuring machine and the data receiving means and the target direction data display means in the bridge side device The operation is the same as that of the target monitoring system according to claim 1, but the dangerous target determination means in the bridge side device determines the danger of the target based on at least the angle between the target direction data and the bow direction of the ship. The alarm generation means issues an alarm when a dangerous target is determined. As described above, the target object monitoring system according to claim 2 can not only read the direction of the target object sent from the target object direction measuring machine, but also can be dangerous due to the angle formed with the bow direction of the own ship. The target is automatically determined, and the operator can easily carry out evasion maneuvering in consideration of the required bearing data of the target and the result of the dangerous target determination.

[0009]

【Example】

 1 and 2 are external perspective views showing the structure of a target orientation measuring machine according to an embodiment of the present invention. In FIG. 1, a portion indicated by 1 is a rate gyro sensor including a rotational angular velocity detecting means according to the present invention, an azimuth data generating means and a data transmitting means, which is integrated with a case of binoculars. In the example shown in FIG. 2, the rate gyro sensor 1 having the same configuration is integrally provided in the housing of the telescope 3.

Next, the configuration of the rate gyro sensor shown in FIGS. 1 and 2 is shown as a block diagram in FIGS. 3 and 4. In FIG. 3, reference numeral 10 denotes a regular triangular prismatic piece-type vibrator, which is mounted on a horizontal gimbal with its axial direction being vertical. This vibrator 10 is provided with three piezoelectric elements. The piezoelectric elements on the left and right sides in the figure are used for driving, and the piezoelectric elements on the other side are used for feedback, and the oscillator circuit 11 and the phase correction circuit 12 are connected. Constitutes a transmission circuit by self-sustained transmission. The differential amplifier circuit 13 differentially amplifies the outputs of the left and right piezoelectric elements, and the synchronous detection circuit 14 synchronously detects the output of the differential amplifier circuit 13. When the oscillator 10 rotates, a Coriolis force is generated by the horizontal angular velocity of the oscillator 10, and the synchronous detection circuit 14 extracts the Coriolis signal. The amplifying circuit 15 smoothes the Coriolis signal and DC-amplifies it. This circuit provides an output voltage proportional to the rotational angular velocity in the small rotational angular velocity range.

In FIG. 4, the circuit shown in FIG. 3 is connected to the integrating circuit 16. The integrating circuit 16 integrates the output of the amplifier circuit 15 shown in FIG. The sample hold circuit 17 samples and holds the output of the integration circuit 16 at a predetermined timing, and the AD converter 18 converts the output into digital data. The CPU 22 reads the digital data via the I / O port 19. The memory 23 is composed of a ROM in which a program to be executed by the CPU 22 is written in advance and a RAM used as a buffer for various arithmetic processes. The transmission switch 20 is a switch operated by an observer when the azimuth data should be transmitted, and the CPU 22 reads the state via the I / O port 21. The display control circuit 24 has a display memory and generates a display signal based on the data. The display 25 is composed of, for example, a liquid crystal display panel, and is provided at a position where it overlaps with the field of view of the binoculars or the telescope. The observer can read the display contents of the display 25 together with the distant view during the sea surveillance. The transmission circuit 27 is a circuit for wirelessly transmitting position data using the antenna 28, and the CPU 22 performs transmission processing by giving direction data to be transmitted via the interface 26.

FIG. 5 shows an example of the integrating circuit 16 in FIG. In this way, an integrating circuit composed of CR and an operational amplifier can be used. In FIG. 5, the reset switch forcibly discharges the charge stored in the capacitor C. For example, by operating this reset switch with the binoculars or telescope facing the reference position (for example, true north), when the binoculars or the telescope is subsequently rotated, the integrating circuit 16 changes the horizontal rotation angle from the reference azimuth. A corresponding voltage signal can be generated.

Next, FIG. 6 is a block diagram showing the configuration of the bridge side device. In FIG. 6, a memory 40 comprises a ROM in which a program to be executed by the CPU 30 is written in advance and a RAM used as a working area when executing the program. The receiving circuit 32 receives the signal transmitted from the rate gyro sensor via the antenna 31 and creates serial data. The CPU 30 reads the data via the interface 33. The compass 34 is, for example, a repeater compass, and detects the heading of the own ship. The CPU 30 reads the heading of the own ship via the interface 35. The speedometer 36 measures the speed of the ship. The CPU 30 reads the ship speed of the own ship via the interface 37. The positioning device 38 is composed of a GPS receiver or the like and measures the position of the own ship. The CPU 30 reads the own ship position data via the interface 39 as required. The display control circuit 41 includes a display memory and creates a display signal based on the display data. The display 42 displays the direction of the dangerous ship, the heading of the own ship, the speed of the own ship, and the like. The alarm generator 44 is a device that generates an alarm sound, and the CPU 30 performs an alarm sound generation process via the interface 43.

Next, FIG. 7 shows an example of a processing procedure of the CPU 22 of the rate gyro sensor shown in FIG. 4 as a flowchart. In the example shown in FIG. 7, first, the AD conversion data by the AD converter 18 is read, and the azimuth data is calculated from the value (n1 → n2). Then, this is displayed on the display 25 (n3). The AD conversion data is a value proportional to the rotation angle of the rate gyro sensor from the reference azimuth. However, if the reference azimuth is true north, the obtained azimuth data can be directly treated as absolute azimuth data. Then, the state of the transmission switch is read (n4). When the transmission switch is turned on, the bearing data at that time is wirelessly transmitted (n5). By repeating the above process, the orientation of the target object currently being monitored is confirmed by the displayed contents, and the position data is wirelessly transmitted to the bridge side device.

In the example shown in FIG. 4, the integration circuit 16 is configured to integrate the rotational angular velocity detection signal, but the integration may be performed by the arithmetic processing of the CPU. An example in that case is shown in FIG. In the example shown in FIG. 8, first, the initial value 0 is substituted for the variable I (n10), and the AD conversion data S is read (n11). Then, the data S is added to I (n12). Then, the azimuth data is calculated from the data I and displayed (n13 → n14). After that, the states of the transmission switch and the reset switch are discriminated, and if both are in the off state, the processes of steps n11 to n14 described above are repeated (n15 → n16 → n11 ...). In this way, the AD conversion data S is sequentially added to the data I to obtain the integral value of I. When the transmission switch is turned on, the bearing data at that time is wirelessly transmitted (n15 → n17). If the reset switch is turned on, the variable I is returned to the initial value 0, and the same processing is performed thereafter (n 16 → n 10 → ...).

9 and 10 are flowcharts showing examples of two different processing procedures performed by the CPU 30 in the bridge side apparatus shown in FIG. In the example of FIG. 9, the presence / absence of a received signal is first determined, and if there is a received signal, the direction data included in the received signal is extracted (n20 → n21). Then, the azimuth data is displayed (n22).

In the example shown in FIG. 10, first, the presence / absence of a received signal is determined, and when there is no received signal, the heading of the bow is read from the compass 34 and displayed (n30 → n37 → n38). Then, the ship speed is read from the speedometer 36 and displayed (n39 → n40). If there is a received signal, the bearing data included in the received signal is extracted and displayed (n30 → n31 → n32). Then, the heading difference θd between the heading of the own ship and the heading data extracted by reception is calculated (n33). It is determined whether or not this azimuth difference θd is less than or equal to the previously determined limit azimuth difference θr (n34). If θd ≦ θr, then it is determined whether the ship speed of the own ship exceeds a predetermined value Vr (n35). If the ship speed> Vr, an alarm is output (n36). If either of the conditions of step n34 or n35 is not satisfied, no alarm is issued.

As described above, the direction data of the target received from the rate gyro sensor is displayed, and it is determined whether the target is a dangerous target based on the relationship between the ship's heading and the ship speed. If it is a dangerous target, an alarm is automatically issued.

In the above-described embodiment, the azimuth data of the target is wirelessly transmitted every time the transmission switch of the target azimuth measuring device is manually operated. However, the azimuth data of the detected target is relatively transmitted. The display contents of the target direction data in the bridge side device may be sequentially updated by wirelessly and repeatedly transmitting wirelessly in a short cycle.

[0020]

[Effect of the device]

 In the target monitoring system according to claim 1 and claim 2 of the present invention, when the observer discovers a dangerous target, the direction data of the target is immediately sent to the bridge side, and the operator is in danger of dangerous goods. It is possible to know the target quickly, and it is possible to carry out precise evasive maneuvering. Further, in the target object monitoring system according to claim 2, since the judgment of the dangerous target object is automatically made at the time of receiving the direction data transmitted from the target object direction measuring instrument, the target operator can be accurately determined. Target information can be given to help prevent collision.

[Brief description of drawings]

FIG. 1 is an external perspective view showing the structure of a target orientation measuring machine according to an embodiment of the present invention.

FIG. 2 is an external perspective view of another target orientation measuring machine according to an embodiment of the present invention.

FIG. 3 is a block diagram showing a partial configuration of a rate gyro sensor provided in the target orientation measuring machine.

FIG. 4 is a block diagram showing a partial configuration of a rate gyro sensor provided in the target orientation measuring machine.

5 is a diagram showing a circuit example of an integrating circuit 16 in FIG.

FIG. 6 is a block diagram showing a configuration of a bridge-side device.

FIG. 7 is a flowchart showing a processing procedure of a CPU in the rate gyro sensor.

FIG. 8 is a flowchart showing another processing procedure of the CPU in the rate gyro sensor.

FIG. 9 is a flowchart illustrating a processing procedure of a CPU in the bridge device.

FIG. 10 is a flowchart showing another processing procedure of the CPU in the bridge device.

[Explanation of symbols]

 1-Rate gyro sensor 2-Binoculars 3-Telescope 10-Tone piece oscillator

Claims (2)

[Scope of utility model registration request] 1. A rotational angular velocity detecting means for detecting a rotational angular velocity in the horizontal direction, an azimuth data generating means for integrating azimuth data by integrating a detection value of the rotational angular velocity detecting means, and a data transmission for wirelessly transmitting the azimuth data. Means, a target azimuth measuring device provided in binoculars or a telescope, data receiving means for receiving the azimuth data and extracting azimuth data of the target, and azimuth data of the target extracted by the data receiving means. Target orientation data display means for displaying
A target monitoring system consisting of a bridge side device installed on the bridge. 2. A rotational angular velocity detecting means for detecting a rotational angular velocity in the horizontal direction, an azimuth data generating means for integrating azimuth data by integrating a detection value of the rotational angular velocity detecting means, and a data transmission for wirelessly transmitting the azimuth data. Means, a target azimuth measuring device provided in binoculars or a telescope, data receiving means for receiving the azimuth data and extracting azimuth data of the target, and azimuth data of the target extracted by the data receiving means. Target orientation data display means for displaying, and a dangerous target determination means for determining the risk of the target by at least the angle formed by the orientation data of the target and the heading of the ship,
A target monitoring system comprising: a bridge-side device, which is provided on a bridge, and an alarm generating means for issuing an alarm when the dangerous target judging means judges a dangerous target.