CN111473815B - Double-host state monitoring system based on multiple sensors and monitoring method thereof - Google Patents
Double-host state monitoring system based on multiple sensors and monitoring method thereof Download PDFInfo
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- CN111473815B CN111473815B CN202010253626.9A CN202010253626A CN111473815B CN 111473815 B CN111473815 B CN 111473815B CN 202010253626 A CN202010253626 A CN 202010253626A CN 111473815 B CN111473815 B CN 111473815B
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Abstract
The invention discloses a double-host state monitoring system based on multiple sensors, which comprises: the display unit is used for displaying monitoring information of the double main engines of the marine engine room; the dynamic sensors are arranged on the left host machine base and the right host machine base of the marine engine room; the noise sensors are arranged on the left and right main engine bases of the marine engine room; attitude sensors arranged on left and right main engine bases of a marine engine room; the trigger control unit is respectively connected with the left and right main machine control handles and the left and right main machine rotating speed signals; and the data processing unit is respectively connected with the vibration sensor, the noise sensor, the attitude sensor, the trigger control unit and the display unit. The invention not only can effectively monitor the vibration and noise of the single main engine of the ship and the attitude information of the installation base, but also realizes the real-time comparison and monitoring of the vibration and noise level of the double main engines, is beneficial to finding the early operation fault of the main engine of the ship, and greatly enriches the monitoring data and the fault monitoring means of the operation state of the double main engines of the sailing ship.
Description
Technical Field
The invention relates to a ship engine room double-host state monitoring system based on multiple sensors and a monitoring method thereof.
Background
Many marine engine rooms are equipped with a left host and a right host, and the navigation working modes of the marine engine rooms comprise various combinations such as single-machine operation and double-machine operation. At present, the monitoring of the running state of a marine main engine is mostly based on a main engine remote control system matched with a marine main engine manufacturer, and related state monitoring parameters are mostly fuel temperature, lubricating oil pressure, main engine rotating speed, exhaust temperature and the like. The vibration information, the noise information and the installation base attitude information of the ship main engine also have very important significance for monitoring the running state and judging the fault of the ship main engine. Meanwhile, parameters such as vibration and noise of the double marine main engines have symmetrical comparable characteristics, but the existing technical scheme has no combined monitoring method for the double marine main engines.
Therefore, the invention designs a multi-sensor ship double-host monitoring method applying a vibration sensor, a noise sensor and an attitude sensor. The method effectively realizes real-time comparison and monitoring of vibration and noise levels of the double hosts based on the multiple sensors, is beneficial to early finding of the operation faults of the hosts, and provides new data support and a brand new thought for monitoring the operation states of the double hosts of the sailing ship.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a double-host state monitoring system based on multiple sensors and a monitoring method thereof, so as to solve the technical problem that the double hosts are not subjected to combined monitoring in the prior art.
The invention provides a double-host state monitoring system based on multiple sensors, which comprises:
the display unit is used for displaying monitoring information of the double main engines of the marine engine room;
the first vibration sensor is arranged on a base of the left main engine of the marine engine room and is used for acquiring a vibration signal of the left main engine;
the first noise sensor is arranged on a base of the left main engine of the marine engine room and used for acquiring a noise signal of the left main engine;
the first attitude sensor is arranged on the left main machine base of the marine engine room and used for acquiring an attitude signal of the left main machine base;
the second vibration sensor is arranged on the base of the right main engine of the marine engine room and is used for acquiring a vibration signal of the right main engine;
the second noise sensor is arranged on the base of the right main engine of the marine engine room and is used for acquiring a noise signal of the right main engine;
the second attitude sensor is arranged on the right main engine base of the marine engine room and is used for acquiring an attitude signal of the right main engine base;
the trigger control unit is respectively connected with the left host control handle, the right host control handle, the left host rotating speed signal and the right host rotating speed signal and is used for acquiring the real-time position of the left host control handle, the real-time position of the right host control handle, the rotating speed of the left host and the rotating speed of the right host and generating a trigger signal;
and the data processing unit is respectively connected with the first vibration sensor, the first noise sensor, the first attitude sensor, the second vibration sensor, the second noise sensor, the second attitude sensor, the trigger control unit and the display unit and is used for calculating the vibration ratio, the noise ratio, the vibration distance, the noise distance and the vibration noise ratio of the double hosts according to the trigger signals through the vibration signals, the noise signals and the attitude signals.
The invention also provides a monitoring method of the double-host state monitoring system based on the multi-sensor, which comprises the following steps:
firstly, the trigger control unit acquires the positions of a left host control handle and a right host control handle and the rotating speeds of the left host and the right host, when at least one state of a non-neutral state of the left host control handle, a non-neutral state of the right host control handle, a non-neutral state of the left host control handle, a state of the rotating speed of the left host greater than zero and a state of the rotating speed of the right host greater than zero is met, the first vibration sensor acquires a vibration signal of the left host, the second vibration sensor acquires a vibration signal of the right host, the first noise sensor acquires a noise signal of the left host, the second noise sensor acquires a noise signal of the right host, the first attitude sensor acquires a base attitude signal of the left host, the second attitude sensor acquires a base attitude signal of the right host, and finally, the data processing unit calculates a vibration ratio of the two hosts, a vibration distance of the two hosts, a speed of the left host and the right host according to the acquired signals, The noise ratio of the double hosts, the noise distance of the double hosts and the vibration noise ratio of the double hosts.
Further, the dual host vibration ratio is calculated by the following formula:
wherein prop _ v _1 is the vibration ratio of the left main machine; prop _ v _2 is the vibration ratio of the right host; x is a vibration signal of the left host; y is a right host vibration signal; and n is the interval collection times.
Further, the dual-host vibration distance is calculated by the following formula:
wherein dist _ v12 is the vibration distance of the double main engines; x is a vibration signal of the left host; and y is a right main machine vibration signal.
Further, the dual host noise ratio is calculated by the following formula:
wherein prop _ n _1 is the left host noise ratio; prop _ n _2 is the right host noise ratio; p is a left host noise signal; q is a right host noise signal; and n is the interval collection times.
Further, the dual-host noise distance is calculated by the following formula:
wherein dist _ n12 is a double-host noise distance; p is a left host noise signal; q is the right host noise signal.
Further, the host vibration noise ratio is calculated by the following formula:
prop_a_1＝prop_v_1/prop_n_1
prop_a_2＝prop_v_2/prop_n_2
wherein prop _ a _1 is the vibration noise ratio of the left host; prop _ a _2 is the vibration noise ratio of the right host; prop _ v _1 is the vibration ratio of the left main machine; prop _ v _2 is the vibration ratio of the right host; prop _ n _1 is the left host noise ratio; prop _ n _2 is the right host noise ratio.
Further, the display unit displays the vibration ratio and the noise vibration ratio of the host machine through a pie graph.
The invention has the beneficial effects that:
the invention monitors aiming at the double main engines of the marine engine room, not only can effectively monitor the vibration, the noise and the attitude information of the installation base of the single main engine of the marine engine room, but also realizes the real-time comparison and monitoring of the vibration and the noise level of the double main engines, is favorable for finding the early operation fault of the main engine of the marine engine, and simultaneously, the real-time monitoring and comparison of the attitude information of the installation base are very favorable for finding the tiny faults such as deformation, welding line cracking and the like of the installation base and the reasons of the abnormal vibration and the noise of the installed main engine, thereby greatly enriching the operation state monitoring data and the fault monitoring means of the double main engines of the sailing marine.
Drawings
The features and advantages of the present invention will be more clearly understood by reference to the accompanying drawings, which are illustrative and not to be construed as limiting the invention in any way, and in which:
FIG. 1 is a schematic diagram of a dual host condition monitoring system based on multiple sensors according to the present invention;
FIG. 2 is a combined display pie chart of a first vibration sensor vibration ratio and a second vibration sensor vibration ratio;
FIG. 3 is a combined display pie chart of a first noise sensor noise ratio and a second noise sensor noise ratio.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention will be further elucidated with reference to the following specific examples. It will be understood by those skilled in the art that these examples are given for the purpose of illustration only and are not intended to limit the scope of the invention, which is defined in the claims appended hereto as modified by various equivalents thereto.
As shown in fig. 1, the present invention provides a dual-host condition monitoring system based on multiple sensors, comprising:
the liquid crystal display unit is used for displaying monitoring information of the double main engines of the marine engine room;
the first vibration sensor is arranged on a base of the left main engine of the marine engine room and is used for acquiring a vibration signal of the left main engine;
the first noise sensor is arranged on a base of the left main engine of the marine engine room and used for acquiring a noise signal of the left main engine;
the first attitude sensor is arranged on the left main machine base of the marine engine room and used for acquiring an attitude signal of the left main machine base;
the second vibration sensor is arranged on the base of the right main engine of the marine engine room and is used for acquiring a vibration signal of the right main engine;
the second noise sensor is arranged on the base of the right main engine of the marine engine room and is used for acquiring a noise signal of the right main engine;
the second attitude sensor is arranged on the right main engine base of the marine engine room and is used for acquiring an attitude signal of the right main engine base;
the trigger control unit is respectively connected with the left host control handle, the right host control handle, the left host rotating speed signal and the right host rotating speed signal and is used for acquiring the real-time position of the left host control handle, the real-time position of the right host control handle, the rotating speed of the left host and the rotating speed of the right host and generating a trigger signal;
and the data processing unit is respectively connected with the first vibration sensor, the first noise sensor, the first attitude sensor, the second vibration sensor, the second noise sensor, the second attitude sensor, the trigger control unit and the liquid crystal display unit, is used for calculating the vibration ratio, the noise ratio, the vibration distance, the noise distance and the vibration noise ratio of the double hosts through the vibration signal, the noise signal and the attitude signal according to the trigger signal, and displays the vibration ratio, the noise ratio, the vibration distance, the noise distance and the vibration noise ratio through the liquid crystal display unit.
The method for monitoring the state of the double hosts by the device comprises the following steps:
firstly, a trigger control unit acquires the positions of a left host control handle and a right host control handle and the rotating speeds of the left host and the right host, when the left host control handle is in a non-neutral state, the right host control handle is in a non-neutral state, the rotating speed of the left host is greater than zero and the rotating speed of the right host is greater than zero, a left host vibration signal is acquired by a first vibration sensor, a right host vibration signal is acquired by a second vibration sensor, a left host noise signal is acquired by a first noise sensor, a right host noise signal is acquired by a second noise sensor, a left host base attitude signal is acquired by a first attitude sensor, a right host base attitude signal is acquired by a second attitude sensor at fixed time intervals, and finally, a data processing unit calculates a double-host vibration ratio, a double-host vibration distance, a double-host noise ratio, a double-host noise distance, a double-host vibration ratio, a double-host vibration distance, a double-host noise distance, a double-host vibration signal and a signal, The vibration noise ratio of the double main machines.
When the triggering condition is met, taking five times of interval sampling as an example, acquiring a left host vibration signal sequence X, a right host vibration signal sequence Y, a left host noise signal P and a right host noise signal Q:
X＝{x1,x2,x3,x4,x5}
Y＝{y1,y2,y3,y4,y5}
P＝{p1,p2,p3,p4,p5}
Q＝{q1,q2,q3,q4,q5}
wherein x is1、x2、x3、x4、x5Is a value obtained by continuously collecting vibration signals of the left main machine for 5 times; y is1、y2、y3、y4、y5Is a value of 5 times of continuous acquisition of the vibration signal of the right host; p is a radical of1、p2、p3、p4、p5Is the 5 times continuous collection value of the left host noise signal; q. q.s1、q2、q3、q4、q5The continuous acquisition value of 5 times of the right host noise signal is obtained, and according to the sequence, the vibration ratio and the noise ratio of the double hosts are calculated by the following formulas:
wherein prop _ v _1 is the vibration ratio of the left main machine; prop _ v _2 is the vibration ratio of the right host; prop _ n _1 is the left host noise ratio; prop _ n _2 is the right host noise ratio; x is a vibration signal of the left host; y is a right host vibration signal; p is a left host noise signal; q is a right host noise signal; and n is the interval collection times.
Meanwhile, the vibration distance of the double hosts and the noise distance of the double hosts can be calculated according to the sequence by the following formulas:
wherein dist _ v12 is the vibration distance of the double main engines; dist _ n12 is the dual host noise distance; x is a vibration signal of the left host; y is a right host vibration signal; p is a left host noise signal; q is the right host noise signal.
After obtaining the vibration ratio and the noise ratio of the double hosts, the vibration noise ratio of the left host and the right host can be obtained through the following formulas:
prop_a_1＝prop_v_1/prop_n_1
prop_a_2＝prop_v_2/prop_n_2
wherein prop _ a _1 is the vibration noise ratio of the left host; prop _ a _2 is the vibration noise ratio of the right host; prop _ v _1 is the vibration ratio of the left main machine; prop _ v _2 is the vibration ratio of the right host; prop _ n _1 is the left host noise ratio; prop _ n _2 is the right host noise ratio.
As shown in fig. 2, the display unit displays the vibration ratio of the left and right hosts through a pie graph, as shown in fig. 3, the display unit displays the vibration ratio of the left and right noise through the pie graph, and the display through the pie graph is more intuitive.
Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.
Claims (2)
1. A monitoring method of a multi-sensor-based dual-host state monitoring system is characterized in that the multi-sensor-based dual-host state monitoring system comprises the following steps:
the display unit is used for displaying monitoring information of the double main engines of the marine engine room;
the first vibration sensor is arranged on a base of the left main engine of the marine engine room and is used for acquiring a vibration signal of the left main engine;
the first noise sensor is arranged on a base of the left main engine of the marine engine room and used for acquiring a noise signal of the left main engine;
the first attitude sensor is arranged on the left main machine base of the marine engine room and used for acquiring an attitude signal of the left main machine base;
the second vibration sensor is arranged on the base of the right main engine of the marine engine room and is used for acquiring a vibration signal of the right main engine;
the second noise sensor is arranged on the base of the right main engine of the marine engine room and is used for acquiring a noise signal of the right main engine;
the second attitude sensor is arranged on the right main engine base of the marine engine room and is used for acquiring an attitude signal of the right main engine base;
the trigger control unit is respectively connected with the left host control handle, the right host control handle, the left host rotating speed signal and the right host rotating speed signal and is used for acquiring the real-time position of the left host control handle, the real-time position of the right host control handle, the rotating speed of the left host and the rotating speed of the right host and generating a trigger signal;
the data processing unit is respectively connected with the first vibration sensor, the first noise sensor, the first attitude sensor, the second vibration sensor, the second noise sensor, the second attitude sensor, the trigger control unit and the display unit and is used for calculating the vibration ratio, the noise ratio, the vibration distance, the noise distance and the vibration noise ratio of the double hosts according to the trigger signals through the vibration signals and the noise signals,
the monitoring method of the double-host state monitoring system based on the multiple sensors comprises the following steps: firstly, the trigger control unit acquires the positions of a left host control handle and a right host control handle and the rotating speeds of the left host and the right host, when at least one state of a non-neutral state of the left host control handle, a non-neutral state of the right host control handle, a non-neutral state of the left host control handle, a state of the rotating speed of the left host greater than zero and a state of the rotating speed of the right host greater than zero is met, the first vibration sensor acquires a vibration signal of the left host, the second vibration sensor acquires a vibration signal of the right host, the first noise sensor acquires a noise signal of the left host, the second noise sensor acquires a noise signal of the right host, the first attitude sensor acquires a base attitude signal of the left host, the second attitude sensor acquires a base attitude signal of the right host, and finally, the data processing unit calculates a vibration ratio of the two hosts, a vibration distance of the two hosts, a speed of the left host and the right host according to the acquired signals, The specific calculation modes of the double-host noise ratio, the double-host noise distance and the double-host vibration noise ratio are as follows:
the dual host vibration ratio is calculated by the following formula:
wherein prop _ v _1 is the vibration ratio of the left main machine; prop _ v _2 is the vibration ratio of the right host; x is a vibration signal of the left host; y is a right host vibration signal; n is the number of the interval acquisition times,
the double-host vibration distance is calculated by the following formula:
wherein dist _ v12 is the vibration distance of the double main engines; x is a vibration signal of the left host; y is the vibration signal of the right main machine,
the dual host noise ratio is calculated by the following formula:
wherein prop _ n _1 is the left host noise ratio; prop _ n _2 is the right host noise ratio; p is a left host noise signal; q is a right host noise signal; n is the number of the interval acquisition times,
the double-host noise distance is calculated by the following formula:
wherein dist _ n12 is a double-host noise distance; p is a left host noise signal; q is the right host noise signal,
the vibration noise ratio of the double main engines is calculated by the following formula:
prop_a_1＝prop_v_1/prop_n_1
prop_a_2＝prop_v_2/prop_n_2
wherein prop _ a _1 is the vibration noise ratio of the left host; prop _ a _2 is the vibration noise ratio of the right host; prop _ v _1 is the vibration ratio of the left main machine; prop _ v _2 is the vibration ratio of the right host; prop _ n _1 is the left host noise ratio; prop _ n _2 is the right host noise ratio.
2. The monitoring method of the multi-sensor based dual-host condition monitoring system according to claim 1, wherein the display unit displays the dual-host vibration ratio and the noise vibration ratio through a pie chart.
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