RU61245U1 - Autonomous buoyant hydrophysical station - Google Patents

Abstract

The proposed utility model of an autonomous buoy hydrophysical station (ABGS) is intended for long-term observations in the ocean. Such buoys can be mounted on a cable with the help of anchors in coastal oceans and in the open ocean or drift in the ocean. AGBS equipped with a complex of oceanological and meteorological instruments regularly measure and transmit the received data to a data processing center (DPC) via a radio channel, including a satellite communication channel. A satellite navigation system is provided for a drifting AGB. Hydrophysical information in digital form via a three-wire cable is transmitted to the ABGS control unit. The proposed ABGS is equipped with a "garland" of hydrophysical measuring modules (GIM). There are eight of them in the proposed ABGS model. GIM may include pressure, temperature, electrical conductivity sensors, etc., filters, amplifiers, ADCs, communication adapters, switches, controllers, etc.

Description

The technical solution relates to the constructive implementation of hydrophysical research tools and can be used, for example, in the implementation of environmental monitoring systems, as well as systems for collecting standard hydrophysical information.

When conducting environmental monitoring, various means of hydrophysical observation are widely used, including autonomous displacing hydrophysical stations. In domestic practice, autonomous buoying stations “ACIT” have been widely used and are being used. These stations are designed to measure standard hydrophysical parameters: salinity, temperature, pressure (depth of penetration of sensors). In the problems of recording a large number of hydrophysical parameters and at various depths, a multicore cable is required. The number of cable cores increases in proportion to the number of measured hydrophysical parameters and the number of horizons (fixed depths). This factor limits the number of measured hydrophysical parameters.

In [Doug Bennett. Real time data gathering with inductive modems., International ocean systems, september / october 2001, pp.l2-15] instead of a multicore cable, a single-core cable using an inductive modem is used.

The proposed utility model of an autonomous hydrophysical buoy station (AGBS) is intended for long-term observations in the ocean. Such buoys can be mounted on a cable with the help of anchors in coastal oceans and in the open ocean or drift in the ocean. AGBS equipped with a complex of oceanological and meteorological instruments regularly measure and transmit the received data to a data processing center (DPC) via a radio channel, including a satellite communication channel. For drifting AGBS, a satellite navigation system is provided. Digital hydrophysical information by

the three-core cable is transferred to the ABGS control unit. The proposed ABGS is equipped with a "garland" of hydrophysical measuring modules (GIM). There are eight of them in the proposed ABGS model. GIM may include pressure, temperature, electrical conductivity sensors, etc., filters, amplifiers, ADCs, communication adapters, switches, controllers, etc. The proposed utility model of an autonomous buoyant hydrophysical station is intended for measuring, recording, and transmitting accumulated information over a radio channel, including a satellite communication channel, to a data processing center (DPC).

ABGS consists (Fig. 1) of an airtight cylindrical hardware module ABGS 1 as part of a control unit 3, a power supply 4. The combined antenna 6 of the Gonets satellite communication system and the Glonass navigation system with subscriber station 7 are placed on the outside under a radio-transparent cap 5 , a flashing light beacon 8 and a radio antenna 9, which are mounted on a float 10 made of syntactic material. The signal cable 11 is connected to the hardware module 1 using a pressure seal 12, to insure the signal cable from jerks, safety halyards 13 are used, which are attached to the signal cable 11 using special clamps 14. All eight elements of the GIM 2 garland are connected in series to the signal cable. Eight-element "garland" of GMM (figure 2) consists of eight sections. The section is a GIM and a piece of measuring cable 2. The GIM is a hardware module 2-9 in the form of a robust cylindrical body, eight pressure connectors for connecting sensors 2-1 and two pressure connectors 2-2 for inputting signal cables 2-3 ( 4 for sensors and 1 for cable on each surface), cable 2-3 is fixed with a clamp 2-8 to the fence 2-7, to exclude the possibility of breaking the signal cable 2-3 two safety harnesses 2-5, safety harnesses and signal cable secured to each other by means of clamps 2-6 and 2-9 special equipment module clamp 2-4. To give a separate section of negative buoyancy of the order of 5 N, hardware

module 2-9 is encircled by a float 2-10. The upper (first) hardware module (Fig. 3) 2-9 is connected via cable 11 and safety halyards 13 to the hardware module ABGS 1. The distance between individual GMMs can be adjusted downward, shortening the length of the safety halyards using clips 2-6 . GIM can be used as a local center for collecting information, for example, temperature sensors equipped with cables of various lengths that are inserted in the GIM using pressure glands 2-1. Thus, it is possible to randomly place 8 sensors between adjacent GMMs. On figa presents a model of a drifting version of ABGS, on figv - model anchored, using ballast 16, option ABGS.

Power supply 4 is assembled from MPL-200 lithium batteries, which ensures continuous operation of the ABGS for at least 100 days

The float 10, made of syntactic materials with a density of 500 kg / m3, provides ABGS positive buoyancy, about 200 N, ABGS.

The subscriber station of the “Gonets” satellite communication system 7, using the antenna 6, transmits hydrophysical and service information to the data processing center (DPC), and the Glonass navigation system determines the location of the ABGS.

The light beacon (SM) turns on in the dark (the inclusion is carried out using the LED) of the day and works in a cyclic mode with a frequency of 30 seconds.

Using the radio antenna 9, the radio is exchanged between the ABGS and the supply vessel. At the same time, the radio antenna plays the role of an active radar transponder.

The control unit (CU) 3 is a microcontroller that controls all ABGS devices according to a given program or by a command received by the radio channel.

BU 3 (figure 4) turns on (turns off) the program light beacon (SM) 8, the location unit (BL) 17, the subscriber unit of the satellite communications and navigation system (CCCH) 7. BL 17 through the antenna 9 is ready to reflect the location

A signal from a standard radar, which allows you to clearly mark the location of the station on the sea surface.

The information storage device (NI) 18 (Fig. 5), which is part of the control unit 3 (Fig. 4), is primarily intended for the accumulation of registered hydrophysical information:

- pre-processing of recorded information by the filter-amplifier 19, 20;

- analog-to-digital conversion of information 21;

- averaging of digitized information, storing information in the buffer memory of RAM 22, then in non-volatile storage device CF 23 and HDD 24.

The system of accumulation of registered data is based on a single-board microcomputer Persior CF-1. CF-1 is based on Motorola MC68SK338 microcontroller, and includes 1Mb flash memory for data and programs, as well as 250 Kb of static RAM 22.

For non-volatile data storage, a Compact Flash (CF) 23 card with a capacity of 16 Mb or more is used (in the proposed utility model, 256 Mb). CF-1 comes with its own Pico DOS operating system, which allows you to create a file system compatible with MS DOS on the Compact Flash card. For the development of target programs, the Metrowerks Code Warrior Pro C / C ++ compiler was used.

As a data storage device, 2.5 HDD 24 with a capacity of 18 GB is used, which is connected to the CF-1 through the expansion card Persistor Big IDEA.

The data storage system software is a set of three independent programs. They are located in three different areas of flash memory and are used for various purposes. The program for setting the accumulation parameters Settings allows you to view and set such registration parameters as the number of channels (up to 64 channels), the sampling frequency (the sampling frequency in this utility model is set to 1 Hz), the size of data buffers, and the diagnostic modes without recompiling and restarting the accumulation program. Duration

registration for 64 channel (8 GIM × 8 sensors = 64 channels) continuous recording mode at a sampling frequency of 1 Hz reaches up to 6 months. In order to reduce energy consumption during the accumulation process, a three-stage buffer is used. Data from the ADC 21 is accumulated in the RAM buffer 22. After filling this buffer, all its contents are transferred to the larger buffer, which is located in the special section of Compact Flash 23. When the buffer located in Compact Flash is full, the HDD 24 controller is turned on and the contents of the buffer are transferred to file. After recording the file, the HDD turns off. Such a cycle by an autonomous station is repeated many times until the work is completed.

Work with ABGS is as follows. After performing pre-suspension activities, the complex is set up in the following sequence. First, ABGS is taken overboard of the supply vessel (Fig. 2), then GIM 2 is placed sequentially, bleeding cable 11 with safety rope 13, and the ballast is carried out last (only in the case of anchoring). The hydrophysical complex is sampled in the same sequence as the formulation. First RB is selected, then a float and a bottom hydrophysical station are sequentially.

Claims (2)

1. An autonomous displacing hydrophysical station containing a hardware module as part of a control unit, a power source, measuring hydrophysical sensors, a recording, accumulation system and a system for transmitting accumulated information over a radio channel, characterized in that a "garland" of eight hydrophysical measuring modules (GIM) is used with four pairs of measuring sensors (temperature and pressure). 2. Autonomous buoy hydrophysical station according to claim 1, characterized in that the satellite communications system "Messenger" and navigation "Glonass" are used.