JPS6269168A - Ship speed measuring instrument - Google Patents

Abstract

PURPOSE:To navigate a marine vessel with high reliability by detecting the driving force of the marine vessel instead of a ship speed signal by a sensor, and obtaining ship speed for backup, when a suspended matter collides with the sensor and it has become faulty. CONSTITUTION:Based on the detection value of a ship speed sensor 2 provided on the marine vessel, the speed and a ship passage are calculated by a speed/ ship passage oscillator 4 and a speed value (log sailing speed) (v) is transmitted. On the other hand, the rotational number N of a screw is detected by a detector 7 for rotational number being a driving force detecting part, and this detection output and the ship speed (v) are led to an adjustment arithmetic part 9 and a proportional constant (k) is determined. By using this proportional constant (k), the detection output N of the detector 7 is converted and adjusted by a ship speed converting part 10, and the ship speed for backup is obtained. Therefore, even in case the sensor 2 is damaged, the navigation of the marine vessel can be executed with the high reliability by switching to the backup ship speed value by a switching element 6, and outputting it to a display part 5.

Description

[Detailed description of the invention]

<Field of Application in Industry> The present invention relates to a ship speed measuring device, and is particularly useful when a ship speed measuring device that normally measures ship speed fails and the ship speed measurement value cannot be detected. By detecting the propulsion force of the ship in place of this ship speed measurement value and setting the backup ship speed to 17, this clay can be used in place of the ship speed measuring device described in Item 1 to obtain a highly reliable ship speed Mf. This invention relates to a ship speed measuring device that can be used to sail. <Prior art> Below is the conventional ship speed measurement block at position A shown in Figure 6.

[The conventional technology will be explained using a Cock diagram. In Fig. 6, a ship 1 is provided with a ship speed sensor 2 (abbreviated as twin "sensor") 2, for example, an electric log, which is protruded into the sea on the bottom of the ship. The detection II corresponding to the ship speed is amplified by the amplifier 3, and then the speed/QA VN fl is Jr linear complemented by the vessel 4.
After zero/span adjustment and filtering processing are performed, the boat speed is indicated on a display unit, for example, an indicator 5. <Problems that the invention seeks to solve> However, in this conventional ship speed measuring device (Yo, cent.
Su2? Is it floating because it protrudes so wide? There are many cases where fti gets hit by rain and becomes infected. In this case, pre(
If you have the Iti sensor, you can replace it and reuse it directly, but there is no spare sensor (L) (in the case of q, the problem is that you have to operate the ship IM+ without a way to know the ship speed. The present invention has been made in view of the problems of the prior art (-).In the event that a sensor malfunctions due to a collision with a floating object such as the one described above, the sensor will
(Instead of No. 3, the ship's 1ff advance is detected and the backup ship speed is set to I7, and this backup I
G) By displaying the speed, 1.6 Wl is reduced for failure of Sen+1.
Minimize damage and achieve highly reliable steering performance 1!7
The purpose is to create a ship speed measuring device that can be used to measure ship speed. Ship speed sensor of the present invention for achieving the objective 1 of B. Based on the detected value of the speed t and the route, the speed and range transmitter?
Propulsion detecting force is output, and this detection output and 1) 1) Vessel speed are led to the adjusting pilot unit to determine the C proportionality constant. After 7, this proportional constant is used to detect C11Q and 11F proceeding force detecting unit. Convert and adjust the output in the ship speed converter [) to obtain the backup ship speed, and change either of the ship speed and the ship speed for the backluff tube (fff+) with the switching element to display the ship speed (, ~ out). Pressure・[
U-4; 0: Always list the ship's speed with high reliability; j;,
-If it is a characteristic. Embodiment 7 Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. In addition, in the drawings below, the part Φm with that in Figure C6 is the same number 1'.
;The explanation will be omitted. FIG. 1 is a functional block diagram of a specific embodiment of the present invention for measuring ship speed. Ship speed sensor + J2 installed on ship 1, marked J in Figure 1
The detected value, which is a signal equivalent to the ship speed detected at
It is amplified by speed and distance (a:!!:' and the speed is 11
n (hereinafter referred to as "[2]g ship speed") 1 Hinatsu CN 01
At/1380K
Normally, the ship speed is indicated by the detected value of the R sensor 2, for example, the indicator 57, when the Pf element is guided to the side at OT. In addition, this configuration remains the same as the conventional functional configuration except for the cutout P1 main desk 6.
be. On the other hand, the functional configuration of the backup signal (9), which is guided to the BACKUP side of the first characteristic element 6, is to detect the +U advance of the ship, for example, to detect the screw rotation speed N. The detection unit, for example, the rotation speed detector 7 (this detector can be of a pulse type, a tandem generator type, etc.), the log ship speed V and the screw rotation speed N are input to the setting command unit 8. An adjustment unit 9 determines and adjusts a proportional constant based on a command signal, and the determined proportional constant k
Based on Skrikopa 2 times・l'/l 1(Convert N・
There is a ship speed converter, for example, a rotational speed-ship speed converter 10, which adjusts to obtain a backup ship speed, and the output of this rotational speed-ship speed converter 10 is converted into, for example, an index i17. −
α? Jt −+ 4 (1−α)υL can be expressed as follows. α is an exponential smoothing coefficient whose value is O〈α＜1
Filtering unit 1 that processes things like "r- is there? Jt-+ is 41 from the previous time, υ is I+Q this time")
It consists of 1 and /] eyes. Note that this filtering section 1
1 is the number of revolutions minus the ship speed g, and i'JT may also be installed in the exchange section. The switching element 6 switches between the log ship speed V and the backup ship speed.
do. The operation of the present invention having such a configuration will be explained in detail one step below. (Adjustment setting L-do) Normally, when an electromagnetic 1-] is installed on a ship, the key ↑I librage:1 is first turned off. In Figure 2, the display boards 11Δ, 11B and 12Δ, +21-38 setting・1 between the two land fish 11 and 12 of the land 10.
reactor. In white clay, the point where 11△ and 1113 can be seen with a small -) on the two-way table 6 at point 11 is 8, and the two display boards 12A and 12 BI'fiil'i at point 12 are -
) is 8, and the distance ml between both points Δ and B is
<For example, 1 inch (1852 m)) is measured in advance. In Part 10, ship 1 equipped with electromagnetic logs is located at both points A and 1.
H between 3

[The output horsepower of the engine is 1/4.2. '4.3/
4,4.・Sequentially change 4 and make if i (J. ΔB
The 115 hours required to move between the two were parked (measured) at each of the above output horsepower (1/'4.2, /4,3.・'4.4.-'4) at the standard time The actual ship speed is determined from the travel time and the distance α known in advance, and the electromagnetic log is calibrated based on this value (hereinafter referred to as Fr mark-to-post travel t-r J). In order to eliminate the influence of wind, the 11 values are averaged and adjusted.This calibrated log ship speed V is output to the log ship speed/rotation speed adjustment section 9 each time. At the same time, the screw rotation speed N is also detected by the rotation detector 7 during running, and is constantly input to the adjustment section 9.
At the time when the calibration corresponding to the individual output horsepower of the alcove is completed, the log boat speed/rotation speed adjustment section 9 calculates (J [ship speed] - [screw speed] Rotation 82] From the relationship of output 17/4 to 4/4 of each propulsion engine, the proportional 2E tag between 1 cog 110 speed υ and screw rotation speed N1 is determined as υi '''Aj,
'NL...determined from the relationship in (1) and stored. However, l is the output 1/between each Ifft.
4 to 4/4. (Backup mode) For example, if the sensor 2 fails or if you want to output the sensor signal i+Tf L: according to the 8th signal, switch the switching element 64 manually or automatically. l to f3AcK L
You can ask the following questions on the IP side. In the backup mode, the proportional constant E determined by [cog ship speed/rotation speed adjustment im G>] is output to the rotation speed - ship speed converter 10, so the screen detected by the rotation speed detector 7 The rotational speed NL is adjusted by the rotational speed-vessel speed converter 10 to a proportional constant 1L' (changed to speed Ii for backup), and is smoothed by the filtering section 11 and converted to the switching element. 6 no 13 ACKtJ
Pffll, and is instructed by the indicator 5 via the switching element 6. In this way, it is possible for the boat 2, for example, to back up the ship speed instruction function using the number of screw revolutions. By the way, the configuration shown in FIG. It is also possible to configure it with a sleeve, and Fig. 3 is a diagram showing one example of the hardware configuration in this case. 3 functions (CPtJ) that process non-linear compensation (a, gap/span adjustment, etc.), filtering, etc., No. 14, unread only memory (ROM), No. 15, random access memory (RAM), No. 16 is an analog-to-digital converter (ADC) which converts the voltage signal (analog value) obtained by amplifying the detected value of the sensor 2 by the amplifier 3 into a digital value and inputs it into the CPU 13. 18 is a rotation speed receiving interface that inputs the screw rotation speed NL of the rotation speed detector 77') II etc. , 19 is a command signal input interface 7 chair for inputting a setting command from the setting command unit 8 (No. 4 or, for example, a switching FJ command signal from the switching command unit GO to switch the switching element function); For example, it is an output interface that outputs ship speed data to the external fork 21. FIG. 4 is a flowchart showing the overall processing of the embodiment of the present invention shown in FIG. 1, which will be explained in detail below. 1. Embodiment of Shit Pond> The backup function part of the present invention is shown in Fig. 1. It is not limited to the configuration shown in Fig. 3. For example, the present invention may be applied to a boat with variable bits of 11. Q Go 1 Yu, 5th
It can be configured as shown in the embodiment of the present invention in the figure. Most variable pitch propeller ships are equipped with a 111 combined shaft horsepower meter.The relationship between this shaft horsepower meter and ship speed is [shaft horsepower] oc [ship speed] 3, so the +tt progression in Figure 1 is This shaft horse meter 22 replaces the rotation speed detector 7 in the force detection unit.
You can use In other words, at t5, in Fig. 55, an example of the configuration of the backup part at t3 is as follows: 1] The spear speed υ4 and the shaft horsepower meter 22
Input the shaft horsepower from -C [Shaft horsepower 1-1 [Ship speed 1]? Entering the m of the 2 constant 1 effect, ↓ and then adding 7 to the proportional constant. f4:)
Speed/'-shaft horsepower adjustment section 0 23 and the proportional constant determined by this log ship speed/'-axis horsepower adjustment calculation section 23, 44 manpower shaft horsepower, shaft horsepower from 1t22, ship speed - (shaft horsepower ykL
＞"K...convert based on (2) and convert back? Part 10
It includes a filtering section 11 that filters the output of the filter. Even if you do this, you will get the same result as in Figure 1! can do. Effects of the Invention 2. As described in detail in conjunction with dozens of examples, the ship speed measuring device of the present invention can be used to detect damaged IJS.
I even when the electromagnetic log is calipulated! ',)
;′! iol: Since it is possible to immediately switch to the backup ship speed value using the propeller rotation speed (or shaft horsepower) system, highly reliable ship operation is possible. Also, backup ship speed value and electromagnetic log ship speed 11
By monitoring the relationship between 0 and 0 as necessary, switching the M element appropriately and comparing λ with λ, we can determine, for example, how many shells are on the ship, for example, depending on the number of rotations, etc. Since you can see the decrease in ship speed, it can be used as a guide for clearing the hull H1, and has other effects other than its original purpose as a backup.

[Brief explanation of drawings]

FIG. 1 is a functional diagram of a specific embodiment of the ship speed measuring device of the present invention, FIG. 2 is a diagram for explaining the present invention, and FIG. A diagram showing an example of the 77 configuration, FIG.
The figure shows another embodiment of the present invention, and FIG. 6 is an f II rack diagram of a conventional ship speed measuring device. 1... Ship, 2... Ship speed sensor, 3... Amplifier,
4...Speed/range transmitter, ゛)...Display section, 6...
・Cut key tree, 7... Rotation speed detector, 9... Log boat speed 5/rotation instruction adjustment calculation section, 10... Rotation speed - boat speed conversion section, 11... Filtering section, 22...shaft horsepower,
=; 1, 23...1 cog ship speed/'shaft horse power adjustment function) part, 24...shaft horsepower - ship speed/φ conversion part. Oshi l wide j 4) 2 Figure 3/ and (11 rice cracking/F)

Claims (1)

[Claims] A ship speed sensor provided on a ship, a speed/range transmitter that calculates and transmits speed and range based on the detected value of the ship speed sensor, and a propulsive force detection unit that detects the propulsive force of the ship; an adjustment calculation unit that inputs the ship speed and the detection output from the propulsive force detection unit and determines a proportionality constant; and a ship speed that converts and adjusts the detection output based on the proportionality constant to obtain a backup ship speed. A ship speed measuring device comprising: a converter; and a switching element that switches and outputs either the ship speed or the backup ship speed.