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RemoDAQ-8000/9000 controllers applied in VDR (voyage data recorder)
一、VDR introduction
VDR(voyage data recorder) is the specialized equipment with the complex system which
could store the information of vessel position, dynamic state, physical condition, orders and
operation, at certain time before and after the accident of the vessels in the way of safety and
recovery. It is called ship's black box. In December, 2004, the 79th conference of IMO MSC
officially passed the amendment of 5th chapter in SOLAS enforcing the vessels of 3000 gross
tons or more built before July 1, 2007 to install VDR or S-VDR before July 1, 2010.July 1.
All the vessels in the international navigation have to be loaded with S-VDR or VDR.
.Considering overall the anti-interference capacity, operating reliability, hardware cost,
installment and maintenance, most recent VDR are designed to adopt the way of multibus .
二、RemoDAQ-8000/9000 applied in VDR
Analog acquisition modules,digital acquisition modules,power acquisition modules and
system monitoring device need to exchange the data with VDR host computer adopting the
master-slave structure. The network of the VDR host computer will send the inquiry orders
actively to these modules in turn and the modules will respond accordingly after receiving the orders.
These modules have a handful of data to transmitted ,and distributed dispersedly, so Gemotech
RemoDAQ-8000/9000 data acquisition modules and embedded controller could achieve , looking at Fig 2.
Fig 2; data acquisition composition based on RS-485、Ethernet
(1.5MB 闪存用于保存文件系统 其中512KB 用于存放用户程序- 1.5 MB Flash used for storing file systems,
512KB used for storing users’ procedures,16位微处理器-16 bit Microprocessor,
支持电池备份-support cell backup,预留调试/编程接口-reserved debug/program interface,
RS-485接口支持Modbus协议或自定义协议-RS-485 interface supports Modbus protocol or user
defined protocol,端口-interface,通用的AI/AO/DI/DO/Counter 模块-universal AI/AO/DI/DO/Counter modules)
1.RemoDAQ-9X21;
programmable controller with Ethernet interface,could get the data remotely
as a Modbus/TCP client-side,also could be the connector of Modbus/TCP server
and HMI/SCADA software. RemoDAQ-9X21 adopts AMD-80188-40M CPU,
builtin ROMDOS,1.5MB Flash(512KB used for users’ application program),
640KB SRAM(384KB used inpower down protection).
RemoDAQ9X21 have 4 serial ports and support 4~8 I/O
expansion slots, convenient for configurating the fields I/O modules.
2. RemoDAQ-9017: 8-channel analog input module, could gather the information of steering
wheel, helm angle, accelerator, angle of thread through the sensors.
3.RemoDAQ-9050; 16-channel digital I/O module, set up DI or DO by DIP switch. Digital
acquisitionmodules mainly gather the information of spindle speed, driving bell,
emergency call bell, back tomake bell, water-tight doors, fire doors, rudder alarm,
main alarm, fire alarm, and fire police,bow stern doors. When some points are far,
we could realize it using RemoDAQ-8000 seriesconnected to RS-485 of RemoDAQ-9X21
serials to expand.The products of Gemotech based on RS-485 and CAN bus
have been widely applied in VDR or SVDR,and receive favorable comment.
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