SU935376A1

SU935376A1 - Device for measuring ship draft

Info

Publication number: SU935376A1
Application number: SU802982718A
Authority: SU
Inventors: Леонид Петрович Иванов; Виктор Евгеньевич Салов
Original assignee: Предприятие П/Я Г-4488
Priority date: 1980-09-01
Filing date: 1980-09-01
Publication date: 1982-06-15

Description

(54) УСТРОЙСТВО ДЛЯ ИЗМЕРЕНИЯ ГЛУБИНЫ ПОГРУЖЕНИЯ СУДНА(54) DEVICE FOR MEASURING THE VESSEL DEPTH DEPTH

1one

Изобретение относитс к судовому оборудованию , в частности к устройствам дл измерени глубины погружени судна.The invention relates to ship equipment, in particular, to devices for measuring the depth of the ship.

Известно устройство дл измерени глубины погружени судна, содержащее установленную в корпусе судна измерительную трубу, нижн часть которой сообщена с забортной водой, а в ее верхней части установлен источник излучени , соединенный с блоком обработки информации 1.A device for measuring the depth of the vessel, containing a measuring tube installed in the hull of the vessel, the lower part of which is connected to the outboard water, and a radiation source connected to the information processing unit 1 is installed in the vessel.

Однако известное устройство не вл етс достаточно надежным в работе.However, the known device is not sufficiently reliable in operation.

Цель изобретени - повыщение точности и надежности работы устройства путем обеспечени диффузного отражени излученного сигнала от поверхности воды.The purpose of the invention is to increase the accuracy and reliability of the device by providing a diffuse reflection of the radiated signal from the water surface.

Цель достигаетс тем, что устройство снабжено упругим элементом в виде трубы, а измерительна труба выполнена из двух частей, . герметично соединенных упом нутым упругим элементом, который расположен на уровне линии минимальной осадки судна, кроме того, источник излучени выполнен в виде лазера.The goal is achieved in that the device is provided with an elastic element in the form of a pipe, and the measuring pipe is made of two parts,. hermetically connected by the above-mentioned elastic element, which is located at the level of the minimum draft line of the vessel; in addition, the radiation source is made in the form of a laser.

На чертеже показана принципиальна схема предлагаемого устройства.The drawing shows a schematic diagram of the proposed device.

Устройство содержит источник 1 излучени (лазер, например, полупроводниковый модул тор 2, приемник 3 (фотоэлектронный умножитель), блок 4 обработки информации, 5 содержащий индикатор, измерительную трубу 5, установленную в корпусе судна 6, нижн часть которой соединена с забортной водой, герметичный упругий элемент 7 в виде трубы (кусок резиновой трубки и т. п.), который расположен на уровне ми° нимальной осадки судна (Ушах- уровень максимальной осадк{Г судна). В измерительной трубе 5 находитс вод ной столб 8, соответствующий действительному уровню осадки судна. Действие устройства 5 основано на оптической локации уровн воды в измерительной трубе, сообщающейс с забортной водой. Локаци ведетс через воздух до уровн воды в трубе. Тем самым исключаетс вли ние физических параметров морской воды, ее агрессивных свойств.The device contains a radiation source 1 (a laser, for example, a semiconductor modulator 2, a receiver 3 (photomultiplier tube), information processing unit 4, 5 containing an indicator, a measuring tube 5 installed in the hull of the ship 6, the lower part of which is connected to the outboard water, sealed an elastic element 7 in the form of a pipe (a piece of rubber tube, etc.), which is located at the minimum draft of the vessel (Ushah is the level of the maximum draft of the vessel). In the measuring pipe 5 there is a water column 8 corresponding to the actual vessel draft level.The operation of device 5 is based on the optical location of the water level in the measuring tube, which communicates with the outboard water.The location leads through the air to the water level in the pipe, thereby eliminating the influence of the physical parameters of seawater and its aggressive properties.

Устройство работает следующим образом.The device works as follows.

Claims

Electromagnetic oscillation source 1 (laser) sends modulated, for example, in phase, modulator 2 radiation, which diffusely reflects from the surface of water column 8 in the measuring tube 5. Reflected radiation from the water column 8 is altered in phase 3 which calculates the distance with an accuracy of ± 5 mm from the phase shift. The measured distance goes to information processing unit 4, where there is an indicator. The sealed elastic element 7 serves to destroy the surface tension film of the water column 8, since the surface film greatly attenuates diffuse reflection from water. Specular reflection from water is observed under the condition of x-cosi Jt. where X is the height of surface irregularities; cosi-cosine of the angle of incidence of the radiated signal; L is the wavelength of the radiator. In order to provide diffuse reflection from water, it is necessary to achieve commensurability of X and L values. In the proposed device, this is achieved with the help of the elastic element 7. This element enhances the vibration (which is always on the vessel due to the working mechanisms and from the impact of waves on the side of the vessel). As a result, the surface of the water column 8 over the entire working range of variation of precipitation from Tmin to Tshchakh also vibrates and thus achieves the equality of x -) (., Thereby providing a diffuse surface. 1L The device is reliable and allows you to increase the measurement accuracy of the draft of the vessel as compared to 10 times known. In addition, this device can be used as level gauges in cargo and ballast tanks of transport ships. Formula of the invention 1. A device for measuring the depth of the ship, containing vessel hull measuring tube, the lower part of which communicates with seawater, and in its upper part there is a radiation source connected to an information processing unit, characterized in that in order to increase the accuracy and reliability of the device by providing diffuse reflection of the radiated signal from the water surface , it is provided with an elastic element in the form of a pipe, and the measuring pipe is made of two parts, hermetically connected by the above-mentioned elastic element, which is located at the level of the minimum siege line ki ship.

2. A device according to claim 1, characterized in that the radiation source is made in the form of a laser. Sources of information taken into account in the examination I. USSR author's certificate No. 563320, cl. B 63 B 39/12, 30.12.74 (prototype).