JPH0664115U - Gyro compass system - Google Patents

Abstract

(57) [Summary] [Purpose] The number of signal lines can be reduced, and further reduction in size and reliability can be achieved by reducing the number of signal lines. [Structure] In a gyro compass system that is driven by a signal from a master compass and is provided with a plurality of repeater compasses for indicating an azimuth, a signal of the rotation speed and the rotation direction of the repeater compass is output based on the deviation signal of the master compass. A transmitting circuit that is provided for each repeater compass, and a receiving circuit that receives the rotation speed and the rotation direction from the transmitting circuit, and that is installed in the repeater compass, and the repeater compass based on the output signal of the receiving circuit. A driver for exciting the motor is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a gyro compass system that receives a direction signal obtained by a gyro compass and obtains directions to repeater compasses installed at multiple locations. The present invention relates to a gyro compass system that has been reduced in size and reduced in size and improved in reliability by reducing the number of signal lines.

[0002]

[Prior art]

 FIG. 2 is a configuration block diagram of a conventional gyro compass system. In the figure, 1 is a control box for controlling the repeater compass. In the control box 1, 1A is a controller which inputs a deviation signal from a master compass (not shown) and outputs an azimuth signal to the driver 1B. The driver 1B rotates a motor 2A of a compass card (not shown) provided in each repeater compass 2 based on the azimuth signal input from the controller 1A, and displays the azimuth signal on each repeater compass 2. The motor 2A generally uses a synchro or step motor and is directly driven by a driver. FIG. 3 is a conceptual diagram of a step motor. The step motor 2A is connected to the driver 1B by four signal lines, and is rotated at a specific step angle by sequentially switching the excitation of the A coil and the B coil. In the case of the synchro motor, five signal lines are required between the synchro motor and the driver. 2B is an illumination in the repeater compass 2.

[0003]

[Problems to be solved by the device]

 In such a conventional gyro compass system, one driver provided in the control box drives a motor provided for each repeater compass, so that 4 to 5 signal lines are laid for each repeater compass. However, it had the drawback of increasing the size of the device. In addition, this signal line may exceed 100 m in the case of a long length, which has a drawback that the motor is affected by the resistance and capacitance of the signal line and the rotation characteristics deteriorate. Furthermore, it is necessary for the driver to take measures to prevent oscillation.

The present invention has been made in view of such a point, and a driver for directly driving a motor is provided for each repeater compass, and a signal of the rotation speed and the rotation direction of the motor is output to the control box side. The purpose of the present invention is to provide a gyro compass system that reduces the number of signal lines, and downsizes and improves reliability by reducing the number of signal lines.

[0005]

[Means for Solving the Problems]

 In order to achieve such an object, the present invention provides a gyro compass system driven by a signal from a master compass and provided with a plurality of repeater compasses for indicating a direction. In the repeater compass; a transmission circuit that outputs the signal of 1) based on the deviation signal of the master compass; a reception circuit that is provided for each repeater compass and that receives the rotation speed and the rotation direction from the transmission circuit; And a driver that excites the motor of the repeater compass based on the output signal of the reception circuit.

[0006]

[Action]

 The rotation information of the motor is transmitted to the receiving circuit provided for each repeater compass via the transmitting circuit. The rotation information received by the receiving circuit is transmitted to the driver, and the driver sequentially switches the excitation of the motor winding according to this information to rotate the motor.

[0007]

【Example】

 An 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 gyro compass system of the present invention. In the figure, components having the same functions as those in FIG. 1C is a transmission circuit that transmits the rotation information of the motor 2A for each repeater compass 2, and the controller 1A inputs the data of the rotation speed and the rotation direction of the motor 2A determined based on the deviation signal from the controller 1A, and the reception circuit 2C. Output.

The signal transmitted from the transmission circuit 1C to the reception circuit 2C is a current signal, and the pulse signal transmits the rotation speed of the motor 2A, and the level signal transmits the rotation direction of the motor 2A. For example, the rotation speed can be increased by increasing the pulse number, and the rotation direction can be changed by switching the high level / low level. 3A is a pulse signal line for transmitting the rotation speed, 3B is a level transmission signal line for transmitting the rotation direction, and 3C is a return signal line for transmitting a return signal.

Reference numeral 2D is a driver provided for each repeater compass, which sequentially switches the excitation of the motor winding in accordance with the rotation speed and the rotation direction received by the receiving circuit 2C to rotate the motor 2A. As described above, since the data for driving the driver 2D is transmitted from the control box 1 to the driver 2D of the repeater compass 2 by the two signal lines, the number of signal lines can be reduced.

[0010]

[Effect of device]

 As described above in detail, the gyro compass system of the present invention is provided with a driver that directly drives the motor for each repeater compass, and a transmission circuit that outputs signals of the rotation speed and the rotation direction of the motor on the control box side. It is a thing. For this reason, the number of signal lines can be reduced, and further reduction in size and reliability can be achieved by reducing the number of signal lines.

[Brief description of drawings]

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

FIG. 2 is a configuration block diagram of a conventional gyro compass system.

FIG. 3 is a conceptual diagram of a step motor.

[Explanation of symbols]

 1C transmitter circuit 2A motor 2C receiver circuit 2D driver

Claims (1)

[Scope of utility model registration request] 1. Driven by a signal from a master compass,
In a gyro compass system provided with a plurality of repeater compasses for indicating an azimuth, a transmission circuit for outputting a rotation speed and a rotation direction signal of the repeater compass based on a deviation signal of the master compass, and provided for each repeater compass A receiving circuit that receives the rotation speed and the rotation direction from the transmitting circuit, and a driver that is installed in the repeater compass and that excites the motor of the repeater compass based on the output signal of the receiving circuit, A gyro compass system characterized by being equipped with.