This standard specifies the performance and requirements of the interface between marine navigation radar and compass and speed log. This standard applies to the connection between marine navigation radar and compass and speed log. This standard also applies to the connection between automatic radar plotting instrument and compass and speed log. GB/T 14556-1993 Interface requirements for marine navigation radar GB/T14556-1993 Standard download decompression password: www.bzxz.net

UDC629.12.014
National Standard of the People's Republic of China
GB/T14556—93
Requirements for interface of marine navigational radar
Requirements for interface of marine navigational radar1993-07-31Promulgated
State Administration of Technical Supervision
Implementation on 1994-02-01
National Standard of the People's Republic of China
Requirements for interface of marine navigational radar
Requirements for interface of marine navigational radarSubject content and scope of applicationWww.bzxZ.net
GB/T14556—93
This standard specifies the performance and requirements of the interface between marine navigation radar (hereinafter referred to as radar) and compass and speed log. This standard applies to the connection between marine navigation radar and compass and speed log. This standard also applies to the connection between automatic radar plotting instrument and compass and speed log. 2 Terminology
2.1 Marine navigation radarmarine navigationalradarMarine navigation radar is a radar used for ship navigation and avoidance. It can display the plane positions of surface ships, buoys, coasts and navigation marks and surface obstacles around the ship relative to the ship. 2.2 Gyrocompass interfaceGyrocompass interface refers to the boundary between the output end of the compass information and the compass information receiving end of the radar. The electronic circuit inside the radar as the compass load is part of the interface.
2.3 Gyrocompass information receiving unitGyrocompass information receiving unit is a device that converts the compass signal into an angular displacement signal or electrical signal that is proportional to the radar and can be accepted.
2.4 Speedometer interfaceloginterface
The speedometer interface refers to the boundary between the output end of the speedometer information and the speedometer information receiving end of the radar. The electronic circuit inside the radar as the speedometer load is part of the interface. 2.5 Log information receiving circuit The log information receiving circuit is a circuit that converts log signals into electrical signals that can be received by radar. 3 Interface requirements
3.1 Compass interface requirements
3.1.1 Compass interface system diagram
The compass interface system diagram is shown in Figure 1.
Student education
Compass value display
Figure 1 Compass interface system diagram
Approved by the State Administration of Technical Supervision on July 31, 1993 and implemented on February 1, 1994
3.1.2 Signal requirements for compass interface
3.1.2.1 Signal function
Provide heading information to the radar.
3.1.2.2 Signal form
a. Analog signal:
Synchronous machine voltage or stepper motor voltage. b. Digital signal.
3.1.2.3 Signal conversion
GB/T14556—93
When the compass signal is an analog signal, the proportional relationship of its angular displacement information is usually 1(°)/r, 2()/r, or 4()/r. Among them, r represents one rotation of the synchro or stepper motor (360°). 3.1.2.4 Signal accuracy
The accuracy of the compass signal should be better than the design requirements of the radar. 3.1.3 Physical requirements of the compass interface
3.1.3.1 Selection of docking components
When the compass signal is sent and received using a synchro or stepper motor, the receiver should give priority to the matching products of the same manufacturer as the transmitter.
3.1.3.2 Load impedance
8. The radar compass signal receiving circuit, as one of the loads of the gyrocompass, shall meet the requirements of impedance adaptation and load balancing design to ensure the accuracy of information transmission. Generally, the equivalent input impedance of the receiving circuit shall be greater than the output impedance of the transmitter. b. When the compass signal receiver adopts an analog/digital converter, the line-to-line input impedance of the converter shall be greater than 200kg. 3.1.3.3 Transmission accuracy
The transmission accuracy of the compass signal shall enable the radar to meet the requirements of the heading accuracy index. 3.1.3.4 Connection
3.1.3.4.1 Typical method of compass interface connection a.
The typical connection of the synchro transmitter and the synchro receiver is shown in Figure 2. The typical connection of the synchro transmitter and the synchro receiver is shown in Figure 2. The typical connection of the synchro transmitter and the synchro receiver is shown in Figure 2. The typical connection of the stepping transmitter and the stepping receiver is shown in Figure 3. 2
GB/T14556-93
Stepping receiver
Figure 3 Typical connection of stepping transmitter and stepping receiver When the compass transmitter is a self-synchronous angle transmitter or a stepping transmitter, and the receiver is an analog/digital converter, the typical connection is shown in Figure 4. Sex machine has been filmed box
Point/converter
Figure 4 Typical connection between self-synchronous angle transmitter or stepping transmitter and analog/digital converter 3.1.3.4.2 Shielding and grounding of compass interface connection The connecting cable of the interface should be a shielded cable. The shielding layer and the grounding wire should have a common point to ensure the correct transmission of the compass signal. 3.2 Requirements for the speedometer interface
3.2.1 Speedometer interface system diagram
The speedometer interface system diagram is shown in Figure 5.
Ride meter interface
Ride meter management
3.2.2 Signal requirements for the speed meter interface
3.2.2.1 Signal function
Figure 5 Speed ​​meter interface system diagram
Ride meter monitors information and receives ionization
Provides range information to the radar.
3.2.2.2 Signal form
a. Pulse signal,
b. Contact signal.
3.2.2.3 Signal ratio
GB/T14556—93
The ratio of the speed meter signal is usually 100 pulses (times)/nmile, 200 pulses (times)/nmile, 400 pulses (times)/nmile and 2000 pulses (times)/nmile, etc.
3.2.2.4 Signal accuracy
The accuracy of the speedometer signal should be better than the design requirements of the radar. 3.2.3 Physical requirements of the speedometer interface
3.2.3.1 Design of the interface circuit
When designing the circuit, the elimination should be considered to prevent interference caused by the leading edge jitter of the speedometer signal. 3.2.3.2 Load impedance
As one of the speedometer loads, the speedometer information receiving circuit of the radar should meet the requirements of impedance adaptation and load balancing design to ensure normal information transmission. Generally, the equivalent input impedance of the interface should be greater than the output impedance of the speedometer. 3.2.3.3 Connection
The typical speedometer interface connection is shown in Figure 6. The new circuit of the Pig Institute
Figure 6 Typical speedometer interface connection
Electrical appliances
3.2.3.4 The connection cable of the interface should be a shielded cable. The shielding layer and the grounding wire should have a common point to ensure the correct transmission of the speedometer signal.
Additional Notes:
This standard was proposed by the Ministry of Machinery and Electronics Industry of the People's Republic of China. This standard was drafted by Shanghai Radio Factory No. 4, and China Shipbuilding Corporation 724 Institute participated in the drafting. The main drafter of this standard was Jiang Ping.
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