CN205396479U - On -board side drinking water detecting system - Google Patents

Abstract

A ship-mounted side draft detection system, said system comprising an angle sensor module, an ultrasonic transmitting module, a transmitting end pressure sensor module, a receiving end pressure sensor module, an ultrasonic receiving module, a synchronization enabling module, a data processing module and a display module; The ultrasonic emitting module is composed of 2N+1 ultrasonic emitting line arrays, 2N+1 mounting brackets, floating bodies and fixing plates. Since the utility model replaces a single emission line array with a multi-radiation line array that forms an angle with each other, it solves the problem that the probe of the single emission line array deviates from the horizontal line when the angle of the floating body is too large, which causes the ultrasound emission probe If it is not within a reasonable working range, it will further affect that the receiving line array cannot correctly receive the signal corresponding to the transmitting line array.

Description

A Shipborne Side Draft Detection System

technical field

The utility model relates to a ship-mounted side draft detection system, which is applied to the fields of ship draft detection, ship safety detection and the like.

Background technique

At present, with the increasing volume of inland waterway shipping, the density of ships has increased significantly. Ship draft detection is of great significance to ensure the safety of navigable ships. The existing shipboard side draft detection system is to build a single line array of ultrasonic transmitting modules, and then use the synchronous enabling module to control the ultrasonic transmitting sensors to transmit ultrasonic waves at equal intervals in sequence, and then push out according to the direct waves received by the receiving end of the ultrasonic sensors. The ship's draft. This method is suitable for fixed installation or when the swing angle of the transmitting transducer array is very small. When the swing angle is too large, the system cannot work normally because the receiving line array cannot correctly receive the signal corresponding to the transmitting line array. The method cannot be directly used for shipboard installation, so its application is greatly limited.

Contents of the invention

In order to solve the above technical problems, the utility model provides a ship-borne side draft detection system, which replaces a single emission line array with an angled multi-emission line array, which solves the problem of single emission when the floating body is raised or lowered too much. The angle of the probe of the line array deviates too much from the horizontal line, which leads to the fact that the ultrasonic transmitting probe is not in the reasonable working range, which further affects the problem that the receiving line array cannot correctly receive the signal corresponding to the transmitting line array. The system can compensate for the inability of the receiving end to accurately receive signals caused by excessive inclination angles.

The technical scheme adopted in the utility model is:

A ship-mounted side draft detection system includes an angle sensor module, an ultrasonic transmitting module, a transmitting-end pressure sensor module, a receiving-end pressure sensor module, an ultrasonic receiving module, a synchronization enabling module, a data processing module, and a display module. The data processing module is respectively connected with the pressure sensor module at the transmitting end, the pressure sensor module at the receiving end, the ultrasonic receiving module and the display module through data lines. The synchronization enabling module is respectively connected to the angle sensor module and the ultrasonic transmitting module through data lines, the ultrasonic transmitting module constitutes a transmitting end, and the ultrasonic receiving module constitutes a receiving end.

The ultrasonic transmitting module is composed of 2N+1 ultrasonic transmitting line arrays, 2N+1 mounting brackets, floating bodies and fixing plates. The ultrasonic emission line array is arranged in a row by a plurality of ultrasonic emission probes and installed on the mounting bracket. The ultrasonic center line emitted by each ultrasonic emission probe is perpendicular to the center line of the length direction of the mounting bracket. The plane formed by the ultrasonic center line emitted by the probe is perpendicular to the plane of the fixed plate.

The numbers of the mounting brackets from left to right are -N, -N+1, ..., 0, ..., N-1, N; then there is an angle Qi between the centerline of the i-th mounting bracket in the length direction and the plane of the fixing plate :

Qi=i*θ;

i=-N,-N+1,...,0,...,N-1,N;

The value range of θ is 1-3 degrees.

The fixed plate is fixed on the side of the floating body submerged in water facing the center of the channel, which is close to the center of the channel, so as to ensure that the ultrasonic emitting line array is completely immersed in the water, and the plane of the fixed plate is perpendicular to the horizontal plane.

The angle sensor module 1 is fixedly installed on the floating body, because the fixed plate and the floating body are fixedly installed, so the angle β of the floating body measured by the angle sensor module is the angle β of the ultrasonic emission line array rising or falling, The angle sensor module transmits the angle β to the synchronization enabling module in real time, where it is stipulated that the upward angle is a positive value, and the downward angle is a negative value.

The transmitting-end pressure sensor module is installed on the fixed plate plane in the ultrasonic transmitting module, and the transmitting-end pressure sensor module measures the depth H between the center position of the ultrasonic transmitting line array and the water surface by measuring the pressure at the center position of the ultrasonic transmitting line array from the water surface .

The ultrasonic receiving module is composed of ultrasonic receiving probes and a mounting bracket. The ultrasonic receiving probes are arranged in a row and installed on a mounting bracket. The ultrasonic center line received by each ultrasonic receiving probe is perpendicular to the plane where the mounting bracket is located, forming a Single ultrasonic receiving line array: The single ultrasonic receiving line array is fixedly installed on the other side of the channel, and is perpendicular to the plane where the mounting bracket is located and the horizontal plane. The pressure sensor module at the receiving end is installed at the center of a single ultrasonic receiving line array, which measures the depth L between the center of the ultrasonic receiving line array and the water surface by measuring the pressure between the center of the ultrasonic receiving line array and the water surface.

The synchronization enabling module is fixedly installed on the floating body, and the synchronization enabling module is used to judge the angle β transmitted by the angle sensor module, obtain an ultrasonic emission line array that currently meets the requirements, and then sequentially transmit time-sharing and equal intervals enable signal.

The data processing module is installed on the floating body, and the data processing module is used to calculate the draft of the ship according to the depth information transmitted by the transmitter pressure sensor module and the receiver pressure sensor module, and the strength of the signal received by the ultrasonic receiving line array.

The display module is installed on the buoyant body, and is used to inform staff whether passing ships exceed the limit.

A kind of shipboard side draft detection method, comprises the following steps,

Step 1: Collect the angle information of the floating body;

Step 2: Collect the depth of the center position of the ultrasonic emission line array;

Step 3: Collect the depth of the center position of the ultrasonic receiving array;

Step 4: Determine the angle and enable the synchronization signal;

Step 5: emit ultrasonic waves;

Step 6: Receive ultrasound;

Step 7: Data processing.

The utility model provides a ship-borne side draft detection system, and the technical effects are as follows:

1) Ultrasonic emission line arrays with mutual angles solve the problem that when the upward or downward angle of the floating body is too large, the probe of a single emission line array deviates too much from the horizontal line, which leads to the fact that the ultrasonic emission probes are not in a reasonable working range, which further affects The receiving line array cannot correctly receive the signal corresponding to the transmitting line array;

2) Ultrasonic emission line arrays at an angle to each other can compensate for the problem of excessive upward or downward angles of the floating body, so it is suitable for installation on the floating body and has a wide range of applications.

3) Ultrasonic emission line arrays at an angle to each other are installed on the floating body, which is convenient for maintenance.

Description of drawings

Fig. 1 is the flowchart of the utility model system.

Fig. 2 is the elevation angle β of the floating body of the present invention, and the ultrasonic emission line array on the i-th mounting bracket is used as the emission line array.

Fig. 3 is a front view of the ultrasonic emission line arrays at angles to each other of the present invention.

Fig. 4 is a left cross-sectional view of the ultrasonic emission linear arrays at angles of each other of the present invention.

Fig. 5 is a right cross-sectional view of ultrasonic emitting linear arrays at angles of each other of the present invention.

detailed description

As shown in Figure 1, a shipboard side draft detection system includes an angle sensor module 1, an ultrasonic transmitting module 3, a transmitting end pressure angle sensor module 6, a receiving end pressure sensor module 5, an ultrasonic receiving module 4, and a synchronization enabling module 2. Data processing module 7 and display module 8 . The data processing module 7 is respectively connected with the transmitter pressure sensor module 6, the receiver pressure sensor module 5, the ultrasonic receiver module 4 and the display module 8 through data lines. The synchronization enabling module 2 is respectively connected to the angle sensor module 1 and the ultrasonic transmitting module 3 through data lines, the ultrasonic transmitting module 3 constitutes a transmitting end, and the ultrasonic receiving module 4 constitutes a receiving end.

The angle sensor module 1 adopts an angle sensor with a pitch accuracy of 0.1 degrees and a sampling rate of 50 Hz, which is suitable for long-distance transmission in the 485 communication mode; the ultrasonic transmitting module 3 adopts an ultrasonic transmitting sensor with a transmitting frequency of 500K and a transmitting angle of 1-3 degrees; The pressure sensor module 6 at the transmitting end adopts a pressure sensor with an accuracy of ±0.2% F.S and an input of 4-20mA, which is suitable for long-distance transmission in the 485 communication mode; the pressure sensor module 5 at the receiving end adopts an accuracy of ±0.2% F.S. 20mA, 485 communication pressure sensor suitable for long-distance transmission; ultrasonic receiving module 4 adopts ultrasonic receiving sensor with a receiving frequency of 500K; synchronization enabling module 2 adopts Xilinx series FPGA, and uses Verilog language programming to generate synchronization signals; data processing module 7 adopts a multi-channel synchronous data acquisition card with a sampling frequency of 200Kps; the display module 8 is a liquid crystal display.

The ultrasonic transmitting module 3 is composed of 2N+1 ultrasonic transmitting linear arrays, 2N+1 mounting brackets 10, floating bodies 11, and fixed plates 12; the ultrasonic transmitting linear array is arranged in a row by a plurality of ultrasonic transmitting probes 9, installed On the mounting bracket 10, the ultrasonic center line that each ultrasonic transmitting probe 9 sends is perpendicular to the center line of the longitudinal direction of the mounting bracket 10, and the plane formed by the ultrasonic center lines that multiple ultrasonic transmitting probes 9 on the same mounting bracket 10 send and the fixed plate 12 plane vertical;

The numbering of the mounting bracket 10 from left to right is -N, -N+1, ..., 0, ..., N-1, N; Angle Qi:

Qi=i*θ;

i=-N,-N+1,...,0,...,N-1,N;

The value range of θ is 1-3 degrees. Since the upward or downward angle of the floating body is small, controlling θ at 1-3 degrees can not only improve the measurement range of the entire system, but also improve the measurement accuracy of the system.

The fixed plate 12 is fixed on the side of the floating body 11 that is close to the center of the waterway and submerged in water and faces the center of the waterway, so as to ensure that the ultrasonic emitting line array is completely immersed in the water, and the plane of the fixed plate 12 is perpendicular to the horizontal plane.

The angle sensor module 1 is fixedly installed on the floating body 11, because the fixed plate 12 and the floating body 11 are fixedly installed, so the angle β of the floating body 11 measured by the angle sensor module 1 is the upward or downward angle of the ultrasonic emission line array. For the pitch angle β, the angle sensor module 1 transmits the angle β to the synchronization enabling module 2 in real time, where it is stipulated that the upward angle is a positive value, and the downward angle is a negative value.

The transmitting end pressure sensor module 6 is installed on the plane of the fixed plate 12 in the ultrasonic transmitting module 3, and the transmitting end pressure angle sensor module 6 measures the center position of the ultrasonic emitting line array by measuring the pressure of the center position of the ultrasonic emitting line array from the water surface Depth H from the water surface.

The ultrasonic receiving module 4 is made up of ultrasonic receiving probes and a mounting bracket 10. The ultrasonic receiving probes are arranged in a row and installed on a mounting bracket 10. The plane is vertical to form a single ultrasonic receiving line array; the single ultrasonic receiving line array is fixedly installed on the other side of the channel, and is perpendicular to the plane where the mounting bracket 10 is located and the horizontal plane;

The pressure sensor module 5 at the receiving end is installed at the center of a single ultrasonic receiving line array, which measures the depth L between the center of the ultrasonic receiving line array and the water surface by measuring the pressure between the center of the ultrasonic receiving line array and the water surface.

The synchronization enabling module 2 is fixedly installed on the floating body 11, and the synchronization enabling module 2 is used to judge the angle β transmitted from the angle sensor module 1, obtain an ultrasonic emission line array that currently meets the requirements, and then time-sharing etc. The enable signal is transmitted cyclically at intervals.

The data processing module 7 is installed on the floating body 11, and the data processing module 7 is used to calculate the depth information transmitted by the pressure sensor module 6 at the transmitting end and the pressure sensor module 5 at the receiving end, and the strength of the signal received by the ultrasonic receiving line array. Out of the ship's draft.

The display module 8 is installed on the floating body 11, and is used to notify the staff whether the passing ships exceed the limit.

A method for detecting side draft on a ship, comprising the following steps:

Step 1: collect the angle information of the floating body 11;

The angle sensor module 1 transmits the upward or downward angle β of the floating body 11 to the synchronization enabling module 2 in real time. Because the fixed plate 12 and the floating body 11 are fixedly installed, the upward or downward angle β of the floating body 11 is the ultrasonic emission line The angle β of the array up or down.

Step 2: Collect the depth of the center position of the ultrasonic emission line array;

The transmitter pressure sensor module 6 collects the distance H from the center position of the ultrasonic transmitter line array to the water surface in real time and then transmits it to the data processing module 7 .

Step 3: Collect the depth of the center position of the ultrasonic receiving array;

The pressure sensor module 5 at the receiving end obtains the depth L between the center position of the ultrasonic receiving array and the water surface in real time and transmits it to the data processing module 7 .

Step 4: Determine the angle and enable the synchronization signal;

The synchronous enabling module 2 processes the angle β of the floating body 11 raised or lowered in real time transmitted by the angle sensor module 1, that is, calculates:

I＝-INT(β/θ+0.5)

INT means take an integer.

θ represents the angle between the center line of the mounting bracket 10 in the longitudinal direction numbered 1 and the plane of the fixing plate 12 .

The included angle of the mounting bracket numbered 0 is 0; the mounting bracket numbered 0 constitutes the reference mounting bracket;

The included angle of the mounting bracket numbered -1 is -θ.

Synchronization enables module 2 to give the ultrasonic emission line array circulation transmission enabling signal on the 1st mounting bracket 10 in the ultrasonic emission module 3 at equal intervals successively;

Step 5: emit ultrasonic waves;

After the ultrasonic emission line array on the 1st mounting bracket 10 obtains the enabling signal transmitted by the synchronous enabling module 2, it emits an ultrasonic signal.

Step 6: Receive ultrasound;

The ultrasonic receiving module 4 installed on the other side of the channel receives the signal and sends it to the data processing module 7 in real time.

Step 7: data processing;

The data processing module 7 calculates the depth H of the first ultrasonic emission line array on the I mounting bracket 10 from the first ultrasonic emission probe 9 of the ultrasonic emission line array to the water surface according to the depth H of the ultrasonic emission line center position transmitted by the transmitter pressure sensor module 6 from the water surface ₁ and the depth L of the center position of the ultrasonic receiving linear array transmitted by the pressure sensor module 5 at the receiving end from the water surface to calculate the depth L ₁ of the first underwater ultrasonic receiving probe from the water surface, and the average value D of H ₁ and L ₁ is used as the water surface The depth of the first ultrasonic receiving probe from the water surface, combined with the strength of the signal received by the ultrasonic receiving line array, calculates the length X of the last blocked ultrasonic receiving probe at the lower end from the first ultrasonic receiving probe, and then calculates the draft as D +X.

The error caused by the elevation angle β of the buoyant body 11 is further described by the mutually angled multi-emission linear array compensation in the following drawings:

As shown in Figure 2, when the floating body is raised at an angle β, the synchronization enabling module 2 processes the raised angle β of the floating body 11 transmitted by the angle sensor module 1 in real time, that is, calculates:

i=-INT(β/θ+0.5), INT means taking an integer, then select the ultrasonic emission line array on the i-th installation bracket 10 as the emission line array, if the β value is far less than the θ value, then select the number as 0 The ultrasonic emission line array on the mounting bracket 10 is used as the emission line array.

Claims (9)

1. A ship-borne side draft detection system, comprising an angle sensor module (1), an ultrasonic transmitting module (3), a transmitting end pressure angle sensor module (6), a receiving end pressure sensor module (5), an ultrasonic receiving module (4 ), synchronous enabling module (2), data processing module (7), display module (8); it is characterized in that, described data processing module (7) connects transmitter end pressure angle sensor module (6), display module ( 8), ultrasonic receiving module (4), receiving end pressure sensor module (5); The angle sensor module (1) is connected to the synchronization enabling module (2), and the synchronization enabling module (2) is connected to the ultrasonic transmitting module (3); the ultrasonic transmitting module (3) constitutes a transmitting end, and the ultrasonic receiving module (4) constitutes a receiving end. 2. A kind of shipboard side draft detection system according to claim 1, characterized in that, the ultrasonic transmitting module (3) consists of 2N+1 ultrasonic transmitting line arrays, 2N+1 mounting brackets (10), floating body (11), fixed plate (12) is made up of; Described ultrasonic emission linear array is arranged in a row by a plurality of ultrasonic emission probes (9), is installed on the mounting bracket (10), the ultrasonic wave that each ultrasonic emission probe (9) sends The center line is perpendicular to the center line in the length direction of the mounting bracket (10), and the plane formed by the center line of ultrasonic waves sent by a plurality of ultrasonic transmitting probes (9) on the same mounting bracket (10) is perpendicular to the plane of the fixed plate (12); The numbering of mounting brackets (10) from left to right is -N, -N+1, ..., 0, ..., N-1, N; There is an included angle Qi between them: Qi=i*θ; i=-N,-N+1,...,0,...,N-1,N; The value range of θ is 1-3 degrees. 3. A ship-mounted side draft detection system according to claim 2, characterized in that, the fixed plate (12) is fixed on the side of the floating body (11) that is close to the center of the channel and submerged in water towards the center of the channel, And the plane of the fixed plate (12) is perpendicular to the horizontal plane. 4. A kind of shipboard side draft detection system according to claim 2, characterized in that, the angle sensor module (1) is fixedly installed on the buoy (11), and the angle sensor module (1) places the angle sensor module (1) on the buoy (11) The angle β of pitching or pitching down is transmitted to the synchronization enabling module (2) in real time, where it is specified that the pitching angle is a positive value, and the pitching angle is a negative value. 5. a kind of ship-borne side draft detection system according to claim 2, is characterized in that, described transmitting end pressure angle sensor module (6) is installed on the fixed plate (12) plane in ultrasonic transmitting module (3), The pressure angle sensor module (6) at the transmitting end measures the depth H between the center position of the ultrasonic transmitting line array and the water surface by measuring the pressure between the center position of the ultrasonic transmitting line array and the water surface. 6. A kind of shipboard side draft detection system according to claim 1, characterized in that, the ultrasonic receiving module (4) is composed of ultrasonic receiving probes and a mounting bracket (10), and the ultrasonic receiving probes are arranged in a row , installed on a mounting bracket (10), the ultrasonic center line received by each ultrasonic receiving probe is perpendicular to the plane where the mounting bracket (10) is located, forming a single ultrasonic receiving line array; the single ultrasonic receiving line array is fixedly installed on the other side of the channel side, and perpendicular to the plane where the mounting bracket (10) is located and the horizontal plane; The pressure sensor module (5) at the receiving end is installed at the center of a single ultrasonic receiving line array, and measures the depth L between the center of the ultrasonic receiving line array and the water surface by measuring the pressure between the center of the ultrasonic receiving line array and the water surface. 7. A kind of shipboard side draft detection system according to claim 2, characterized in that, the synchronization enabling module (2) is fixedly installed on the buoy (11), and the synchronization enabling module (2) is used to adjust the angle The angle β transmitted from the sensor module (1) is judged to obtain an ultrasonic emission line array that currently meets the requirements, and then the enabling signals are transmitted in a time-sharing and equal-interval cycle. 8. A kind of shipboard side draft detection system according to claim 2, characterized in that, the data processing module (7) is installed on the buoy (11), and the data processing module (7) is used to The depth information transmitted by the sensor module (6) and the pressure sensor module (5) at the receiving end, and the strength of the signal received by the ultrasonic receiving line array are used to calculate the draft of the ship. 9. A ship-mounted side draft detection system according to claim 2, characterized in that the display module (8) is installed on the buoy (11) to notify staff whether passing ships exceed the limit.