CN111024131B - Calibration method for horizontal reference mirror - Google Patents

The invention relates to a calibration method of a horizontal reference mirror, which comprises the following steps: s1, adjusting the horizontal reference mirrors on the ship equipment and the ship body in a static state; s2, calibration is carried out under dynamic conditions, and the calibration method comprises the following sub-steps: s21 erecting a first autocollimator above a horizontal reference mirror on the ship body and aligning; s22 erecting a reflector between a horizontal reference mirror on the ship body and the first autocollimator, and adjusting the horizontal posture of the reflector to make the first autocollimator align with the reflector; s23 erecting a second autocollimator above the horizontal reference mirror and the reflecting mirror on the ship equipment, and adjusting the second autocollimator to make the second autocollimator align with the reflecting mirror; s24, removing the reflector, reading the value displayed by the second autocollimator, wherein the value is the difference between the horizontal reference mirror of the ship equipment and the horizontal reference mirror of the ship body. The invention realizes the accurate retest of the horizontal attitude of the ship equipment under the dynamic condition.

Calibration method for horizontal reference mirror

Technical Field

The invention belongs to the technical field of ship equipment attitude calibration, and particularly relates to a calibration method for a horizontal reference mirror.

Background

The conventional horizontal calibration method for the attitude of the ship equipment adopts an electronic level meter, the electronic level meter is firstly placed on a ship metal horizontal reference flat plate, the value of the trim and heeling angle of the ship metal horizontal reference flat plate is measured, then the electronic level meter is placed on a horizontal reference surface of the ship equipment, and the value of the trim and heeling angle of the ship equipment horizontal reference surface is measured. As shown in fig. 1. However, the measurement of the horizontal attitude of the ship equipment under the dynamic state is influenced by the inclination angle, the swing amplitude and the swing period of the ship, and the measurement accuracy of the electronic level meter is influenced.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a horizontal reference mirror calibration method capable of accurately retesting the horizontal attitude of ship equipment in a dynamic state.

The above object of the present invention is achieved by the following technical solutions:

a calibration method for a horizontal reference mirror adopts instrument equipment comprising a metal horizontal reference flat plate, the horizontal reference mirror, an electronic level meter, an autocollimator and a reflector, and comprises the following steps:

s1 adjusting the horizontal reference mirror on the ship equipment and the ship body under static state, comprising the following substeps:

s11, firstly adjusting the horizontal attitude of the ship equipment, specifically, firstly placing an electronic level meter on a metal horizontal reference flat plate of the ship, measuring the pitch and yaw angle value of the metal horizontal reference flat plate of the ship, then placing the electronic level meter on a horizontal reference plane of the ship, measuring the pitch and yaw angle value of the horizontal reference plane of the ship equipment, and adjusting the electronic level meter to be consistent with the pitch and yaw angle value of the metal horizontal reference flat plate;

s12 then adjusting the trim and list angle of the horizontal reference mirror on the ship body, specifically: placing an electronic level meter on a metal horizontal reference flat plate of a ship, measuring the value of the trim and heeling angle of the metal horizontal reference flat plate of the ship, placing the electronic level meter on a horizontal reference mirror on a ship body, measuring the value of the trim and heeling angle of the horizontal reference mirror, adjusting the value of the trim and heeling angle of the horizontal reference mirror to be consistent with that of the metal horizontal reference flat plate through a leveling screw of the horizontal reference mirror, and fixing the horizontal reference mirror reliably through a fastening screw;

s2, calibration is carried out under dynamic conditions, and the calibration method comprises the following sub-steps:

s21 erecting a first autocollimator above a horizontal reference mirror on the ship body and aligning;

s22 erecting a reflector between a horizontal reference mirror on the ship body and the first autocollimator, and adjusting the horizontal posture of the reflector to make the first autocollimator align with the reflector;

s23 erecting a second autocollimator above the horizontal reference mirror and the reflecting mirror on the ship equipment, and adjusting the second autocollimator to make the second autocollimator align with the reflecting mirror;

s24, removing the reflector, reading the value displayed by the second autocollimator, wherein the value is the difference between the horizontal reference mirror of the ship equipment and the horizontal reference mirror of the ship body.

The invention has the advantages and positive effects that:

the method is characterized in that a horizontal reference mirror installed on a ship body is arranged near ship equipment, the mirror surface of the horizontal reference mirror is adjusted to be consistent with a metal horizontal reference flat plate under a static state, an autocollimator and a reflector are erected above the mirror surface of the horizontal reference mirror and the horizontal reference mirror of the ship equipment during retesting under a dynamic state, and the difference value between the horizontal reference mirror and the horizontal reference mirror of the ship equipment is compared, so that the accurate retesting of the horizontal posture of the ship equipment under the dynamic state is realized.

Drawings

FIG. 1 is a schematic diagram of a conventional horizontal calibration method;

FIG. 2 is a schematic view of the present invention adjusting the trim angle of a horizontal reference mirror on a ship body;

FIG. 3 is a schematic diagram of the present invention erecting a first autocollimator over a horizontal reference mirror on a ship body and aligning;

fig. 4 is a schematic view of the present invention erecting a reflecting mirror between a horizontal reference mirror on a ship body and a first autocollimator;

FIG. 5 is a schematic diagram of the present invention with a second autocollimator mounted above the horizontal reference mirror and reflector on the ship equipment;

FIG. 6 is a schematic view of the invention with the mirror removed.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments, which are illustrative, not restrictive, and the scope of the invention is not limited thereto.

Referring to fig. 1-6, the instrument used in the method includes a metal horizontal reference plate, a horizontal reference mirror, an electronic level, an autocollimator, and a reflector, and includes the following steps:

s2, calibration is carried out under dynamic conditions, and the calibration method comprises the following sub-steps:

s24, removing the reflector, reading the value displayed by the second autocollimator, wherein the value is the difference between the horizontal reference mirror of the ship equipment and the horizontal reference mirror of the ship body.

The first autocollimator, the second autocollimator and the reflector are erected and provided with corresponding support frames, the support frames all use the ship body as an installation foundation, the support frames are not shown in the attached drawings, and only instrument equipment and corresponding position relations are shown.

Although the embodiments and figures of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the invention and the appended claims, and therefore the scope of the invention is not limited to the disclosure of the embodiments and figures.

1. A calibration method for a horizontal reference mirror adopts instrument equipment comprising a metal horizontal reference flat plate, the horizontal reference mirror, an electronic level meter, an autocollimator and a reflector, and comprises the following steps:

s1 adjusting the horizontal reference mirror on the ship equipment and the ship body under static state, comprising the following substeps:

s11, firstly, adjusting the horizontal attitude of the ship equipment, specifically, firstly, placing an electronic level meter on a metal horizontal reference flat plate of the ship, measuring the pitch and yaw angle value of the metal horizontal reference flat plate of the ship, then placing the electronic level meter on a horizontal reference plane of the ship, measuring the pitch and yaw angle value of the horizontal reference plane of the ship, and adjusting to be consistent with the pitch and yaw angle value of the metal horizontal reference flat plate;

s12 then adjusting the trim and list angle of the horizontal reference mirror on the ship' S body, specifically: placing an electronic level meter on a metal horizontal reference flat plate of a ship, measuring the value of the trim and heeling angle of the metal horizontal reference flat plate of the ship, placing the electronic level meter on a horizontal reference mirror on a ship body, measuring the value of the trim and heeling angle of the horizontal reference mirror, adjusting the value of the trim and heeling angle of the horizontal reference mirror to be consistent with that of the metal horizontal reference flat plate through a leveling screw of the horizontal reference mirror, and fixing the horizontal reference mirror reliably through a fastening screw;

s2, calibration is carried out under dynamic conditions, and the calibration method comprises the following sub-steps:

s21 erecting a first autocollimator above a horizontal reference mirror on the ship body and aligning;

s22 erecting a reflector between a horizontal reference mirror on the ship body and the first autocollimator, and adjusting the horizontal posture of the reflector to make the first autocollimator align with the reflector;

s23 erecting a second autocollimator above the horizontal reference mirror and the reflecting mirror on the ship equipment, and adjusting the second autocollimator to make the second autocollimator align with the reflecting mirror;

s24, removing the reflector, reading the value displayed by the second autocollimator, wherein the value is the difference between the horizontal reference mirror of the ship equipment and the horizontal reference mirror of the ship body.