SU1461684A1 - Apparatus for determining parameters of shipъs rolling and pitching along the line of apparent horizon - Google Patents

Abstract

The invention relates to computing and can be used to experimentally determine the parameters of the ship’s heave along the visible horizon. The purpose of the invention is to expand the functionality of the device by automatically detecting the angular velocities of the roll and trim, which is achieved in that the device containing the television camera 1, the frame 2 generators and the horizontal 3 sweeps, the frame sync pulses 4 and the calibrated pulses 7, the amplitude selector 5 video pulses, electronic key 6, electronic comm.mmutator 8, counting unit 9 and computing unit 10, timer 11 is additionally entered. 2 Il. with S (L

Description

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The invention relates to a measurement technique, in particular, to devices for experimentally determining the parameters of the ship’s motion along the visible horizon.

The purpose of the invention is to expand the functionality of the device by automatically determining the angular velocities of the roll and trim.

FIG. 1 shows a block diagram of the device; in fig. 2 - time diagram of the device.

The device contains a television camera 1, personnel 2 and line 3 generators, a generator of 4 frame sync pulses, an amplitude selector 5 video pulses, an electronic switch 6, a generator of 7 calibrated pulses, an electronic switch 8, a counting unit 9, a computing unit 10, a timer with interface 11.

The device works in the following way.

When the device is turned on, the TV camera 1 is aligned and aligned with the vessel and the visible horizon using frame 2, horizontal 3 sweeps and frame sync 4 generators, generates a video image of the horizon line and supplies it to the input of the amplitude selector 5, with the first sync pulse of 4 - starts frame 2 and line 3 generators, opens the electronic key 6 for passing the calibrated pulses through the electronic switch 8 to the counting unit 9 and before the counting begins, performs the operation "Resetting the counting device 9. When the device is turned on, timer 11 is started. The arrival and counting of the calibrated pulses continues throughout the entire time that the scanning beam moves in the vertical plane until it crosses the body of the visible horizon on the target of the imaging chamber. At the moment of intersection at the output of the amplitude selector 5, a pulse arises that closes the electronic key, terminating the count of calibrated pulses, and via the interface of the timer 11 gives the command to read the value of the current time and transfer it to the memory of the computing unit 10.

The number of recorded pulses is functionally related to the angular position of the optical axis of the television camera 1 relative to the normal to the line of the visible horizon lying in the plane of the true horizon.

After the end of frame scanning, the scanning beam returns to its original position. The second frame sync pulse performs the operation "Resetting the counting unit 9, while storing the code of the number of counted calibrated pulses in the memory of the computing unit 10.

Thus, in the period of the frame scan in the memory of the computing unit 10

codes are received for calibrated pulses and the current time.

The calculation of the current values of the angular speeds of pitching is performed in the computing unit in accordance with the formula

 AVi AVojITy-n --- /)

  At; ii + n-ii

where tg (L1 is the distance traveled by the scanning beam on the target of the camera during the time interval between adjacent pulses of the generator 7 calibrated pulses, f is the focal distance of the television camera) is the angular price of the raster of the camera along the vertical; P,; n, - + „- the number of pulses of the generator 7, calculated by the counting unit 9 on the previous and subsequent teleframes, respectively, during the period of passage of the scanning beam along

vertical distance to the position on the target line of the visible horizon; AV, - is the angular distance traveled by the image of the line of the visible horizon on the target between the previous and next teleframes; At / is the time of passage of the angle;

t /, tn + i are counts of the current time by timer 11 at the time when the scanning beam crosses the line of the visible horizon in the preceding and subsequent teleframes, respectively.

The algorithm of the computing unit 10 for exchanging information with block 9 and timer 11, not including the exchange of channel, commands, is as follows:

1. Waiting for an exchange with an external device.

2. Has Timer 11 issued a time code?

Yes - transition in p. 3. No - transition

in paragraph 1.

3. The exchange with the timer is 11.

4. Waiting for exchange with unit 9.

5. Is the information from bl. 9 Yes - the transition in paragraph 6. No - in paragraph 4.

6. The exchange with block 9 is over.

7. Calculation of the parameters of pitching and documenting the results of the calculation.

8. Preparation for the exchange and the transition to paragraph 1.

45

Claims (1)

Invention Formula A device for determining the parameters of a ship’s onboard and pitching along the visible horizon, comprising a television camera, a frame generator and a horizontal scanning generator, a frame sync pulse generator, an amplitude video pulse selector, an electronic switch, a calibrated pulse generator, an electronic switch, a counting unit, a computing unit first and The second information inputs of which are connected respectively to the first and second outputs. The counting unit, the first and second counting inputs of which are connected respectively, the first and second outputs of the electronic switch, the control input of which is connected to the first output of the horizontal scanning generator, the information input of the electronic switch is connected to the output of the electronic key, the first and second control inputs of which are connected respectively to the first output of the frame sync pulse generator and the output of the calibrated impulses, the information output of the electronic key is connected to the output of the amplitude selector of video pulses, the input of which is connected to the output the home of the video signal of a television camera, the first and second synchronization inputs of which are connected respectively to 5A.1d. J.U) 5l.216 (, 1) () bl.3 {out. 2) 6л.5 (вх) 5л.5 {в /) 5л.7 (8ы) () Bl-Tsbyh) 5L.81Y) 5A.8iSb / x.2} l.v (8xhl} l.3 (8y / x.2) BAP {8s) (.) Shipment. Tj code in 5l. SCH I PI  I Shipment -KodaJ about 5l-10  P I I PeresyAka Kodo8 8reiy 8Mlo Koaoo openejiu fiT sync pulses of frame and line scan generators, respectively, whose sync inputs are connected to a second frame sync generator output, the third output of which is connected to the first and second reset inputs of the counting unit, characterized in that in order to expand the functionality of the device by automatically determining angular velocities roll and trim, a timer is entered into it, the first input of which is connected to the input of the electronic key, and the second input and output are connected accordingly It is connected with the control output and the third information input of the computing unit.  I Kodo8 Grey Koaoo openejiu fiT