JPH09415U - Wharf measuring device - Google Patents

Abstract

(57) [Abstract] (Correction) [Problem] To safely and easily operate a ship even in an explosion-proof area by making it easy to see the display device that has an explosion-proof structure that is connected to the measurement control unit by a cable with safety measures. Providing a berth measuring device that can be used for training. SOLUTION: Sensors 1A and 1B installed at both left and right ends of a shallow bridge 101 transmit ultrasonic waves to the bow or stern of a ship 102 by an ultrasonic transducer, receive reflected waves from the ship 102, and indoors on land. The detection data is sent to the measurement control unit 100 installed in the vehicle via the explosion-proof cables 2A and 2B. The measurement control unit 100 processes the data of the sensors 1A and 1B, calculates the distance and speed of the ship 102, and then sends the calculated data to the display unit 90 via the explosion-proof cable 20. The display unit 90 is an internal pressure explosion-proof type, receives measurement data from the land-based measurement control unit 100 by the pressure-resistant explosion-proof cable 20, and keeps the pressure constant by the high-pressure air pipe 21.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention measures the berthing speed and distance of a ship and the degree of danger of berthing or leaving the shore using ultrasonic waves or radio waves, and displays the measurement results on a display panel and warning lights to facilitate the maneuvering of the ship. Squeeze berth measuring device.

[0002]

[Prior art]

 Such a berth measuring device is known from Japanese Patent Publication No. 50-9307, published by the present applicant: Optoelectronic Technical Report No. 3 (1985), and the like.

[0003]

[Problems to be solved by the device]

 However, the conventional berth measuring device has a problem when it is used for seabass, which handles dangerous materials such as oil plants. In such a case, it is necessary to display in a large and easy-to-see place on the seabass where the operator of the ship can see at a glance, and to display it in a large size especially in a place where safety is expected. is there. Although the vessel is laid side by side with respect to the shallow bridge, since it approaches the shallow bridge at an angle at the time of berthing, it is necessary to be able to see the display device sufficiently well within a certain viewing direction range. Conventionally, there was no such consideration.

In addition, sea berths handling dangerous materials are stipulated by law as an explosion-proof area. Therefore, the minimum unit of the berth measuring device to be installed in the seaverse is limited to the ultrasonic or electromagnetic wave-based sensor that measures the distance to the ship and the display unit that displays the measurement data. , Place a measurement unit on land. At this time, as a cable for signal transmission and power supply between the measurement unit, the sensor, and the display unit, for safety, put it in a steel pipe and seal several places along the way to prevent air and gas from flowing. I won't. Therefore, if various types of measurement data are individually transmitted via cables, the cost of cable wiring will be significantly higher. The term "cable" below refers to a cable that has the above safety measures.

In view of the above circumstances, an object of the present invention is to rationalize the cable wiring to the display unit, and the display unit collectively displays various display contents so that the ship approaches the seaverse at an angle. It is an object of the present invention to provide a berth measurement device that can change the direction so that the operator can easily see the display unit even when doing so.

[0006]

[Means for Solving the Problems]

 According to the berthing measuring device of the present invention, the display device having the explosion-proof structure is installed on the sea berth designated as the explosion-proof area, and the measurement control unit installed at a location distant from the explosion-proof area is provided with the explosion-proof structure. By connecting with a cable having a safety structure and receiving serial data from the measurement control unit via this cable, the number of cables can be reduced and the explosion-proof mechanism can be simplified accordingly. Has been planned.

In addition, the display device is rotatably installed on the fixed base over a range of a predetermined angle, thereby improving the visibility of the ship from the side of the berth.

Further, it is determined whether the berthing state corresponds to a safe state, a caution state, or a dangerous state based on a combination of the distance and the berthing speed measured by the measurement control unit, and the determination result is used as the distance and the berthing speed. Based on the received judgment result, the display device sends a blue light emitting element if it is in a safe state, a yellow light emitting element if it is in a caution state, and if it is in a dangerous state. By further including a display control unit that operates the blue light emitting element, it is configured so that the ship can be notified of the berthing status in a manner familiar to traffic means on the road.

[0009]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 7 is a plan view showing an installation example of the device of the present invention. The shallow bridge 101 has sensors 1A and 1B installed at its left end and right end, respectively.

The sensors 1A and 1B transmit ultrasonic waves to the bow or stern of the ship 102 with ultrasonic transducers, receive reflected waves emitted by the ship 102, and send them to the measurement control unit 100 installed indoors on land. The detection data is sent via the explosion-proof cables 2A and 2B. The sensors 1A and 1B are not limited to sound waves, and may use radio waves. The measurement control unit 100 processes the data of the sensors 1A and 1B to calculate the distance and speed of the ship 102, and then installs predetermined measurement data on the shallow bridge 101 via the flameproof explosion-proof cable 20. Sent to the display unit 90.

The display unit 90 is an internal pressure explosion-proof type, receives measurement data from the land-based measurement control unit 100 by the pressure-resistant explosion-proof cable 20, and keeps the pressure constant by the high-pressure air pipe 21. .

As shown in FIG. 3, the display section 90 has a large display panel 30 on the front side and rotation warning lamp sections 36 and 35 on its sides, and the whole is rotated by a rotation base 80. When the ship 102 is approaching the shallow bridge 101 at an angle, the direction is changed so that it is easy to see. The mechanism of the rotary pedestal 80 will be described in detail later.

The contents displayed on the display unit 90 are data in which the left half 90A corresponds to the sensor 1A and the right half 90B corresponds to the sensor 1B as shown in the figure. In the display panel 30, the lamp circuits on the left side 31 and 32 show the distance display in meters and the speed display in centimeters / second, respectively, and the lamp circuits on the right side 33 and 34 give the same display. If the first character has a negative sign, the speed display indicates that it is in the direction away from the shallow bridge 101. Others are cases of approach.

The rotation warning light units 36 and 35 are each composed of three red (R), yellow (Y), and blue (B) lamps, and when the safe speed is set in accordance with a preset ship speed range. Blue, yellow at caution speed, red at critical speed. This range of ship speed is set within a certain distance and is appropriately determined according to the distance.

Next, the electrical relationship between the display unit 90 and the measurement shallow bridge unit 100 will be described with reference to the block diagram of FIGS. 1 and 2. A characteristic point of this part is that, when the measurement data is transmitted from the measurement control unit 100 to the display unit 90, a large number of signal data are sent by one cable to rationalize the signal line, that is, the cable wiring. . Further, high-pressure gas is sent from the measurement control unit 100 through the air pipe 21, and the display unit 90 is made an internal pressure explosion-proof type, but this air pressure is adjusted.

As shown in FIG. 1, the measurement control unit 100 is divided into an electric measurement unit 100A and a transmission control unit 100B that controls the air pressure sent to the display unit 90. First, the electric measuring unit 100A will be described. The sensors 1A and 1B use ultrasonic transducers of 100 KHz, and the transmitting / receiving units 3 and 4 periodically transmit sound waves and receive reflected sound waves. The transmission / reception units 3 and 4 perform time control of transmission / reception, switching of the sensors 1A and 1B, sampling of the reception signal by the transmission / reception control signal Tc from the measurement processing unit 5, and the A / D-converted reception digital signal Rd. It is sent to the measurement processing unit 5.

As shown in FIG. 2, the measurement processing section 5 is a section for processing the measurement data by the CPU 11, and the ROM 13, the RAM 15, the interface circuit 12 and the signal processing circuit 6 of the next stage are connected to the bus 13. The ROM 14 stores a procedure program, and the RAM 15 stores processing results and other data. Through the interface circuit 12, the CPU 11 controls the input / output of the Tm signal of the operation unit 8 and the display data Td signal of the indoor display 7 of the measurement control unit 100, in addition to the reception digital signal Rd and the transmission / reception control signal Tc described above. To do. Here, the Tm signal is a signal for setting the conditions of the rotation warning lamp units 35 and 36.

The processing performed by the measurement processing unit 5 is to calculate the distance DD of the ship 102 from the sensors 1A and 1B; the ship speed DS; the rotation warning light signal DW from the received digital signal Rd and output it as measurement data. Is. The distance DD is calculated from the time from the time of transmission to the time of reception and the propagation velocity of ultrasonic waves, and the average value is obtained for several cycles of repetition. The ship speed DS is calculated by dividing the difference between the distance at the previous repetition cycle and the distance at the current repetition cycle by the cycle. The value is calculated as the average value.

When the change in the distance DD decreases or increases with time, the ship 102 approaches or moves away from the shallow bridge 101, and a negative sign of + or-is added to the ship speed DS value. The rotation warning light signal DW is output by determining which speed range is in accordance with the ship speed DS and the operation data Tm signal set by the operation unit 8.

The signals of the distance DD, the ship speed DS, and the rotation warning light signal DW are transmitted via a single signal line in order to rationalize the wiring of the cable to the display unit 90. For this reason, the signals are arranged by the signal processing circuit 6 in a time-series determined format to form a serial bit string, so that parallel-serial conversion is performed.

In the present embodiment, a series of data is sequentially composed of a sync signal (DX) of 8 bits, a “BOW” side (corresponding to the sensor 1A), a BDD code of the distance DD, the highest digit 4 bits, and the digit 10 ¹ of 4 bits. 10 ° digit 4 bits, ship speed DS polarity 1 bit, BCD code 10 ¹ digit 4 bits, 10 ° digit 4 bits, then “STREN” side (sensor 1B compatible) distance DD, ship speed DS Next, the bit arrangement is performed as "BOW" side rotation warning light signal DW4 bits and "STR EN" side rotation warning light signal DW4 bits. The data transfer rate can be selected from 110 baud or 4800 baud.

The data D output from the signal processing circuit 6 together with the power supply 9 is sent to the display unit 90 by the cable 20. The cable 20 is provided with a transmission control section 100B, and the cable 20 is opened to send the data D and the power source 9 only when the display section 90 satisfies the internal pressure explosion-proof condition.

The transmission control unit 100B includes an internal pressure control unit 22 and an air control unit 25, and when the internal pressure detection value of the internal pressure protection circuit 42 provided in the display unit 90 is lower than a predetermined internal pressure, the internal pressure control unit 22 does not send the data D and the power source 9 to the display section 90, but supplies high-pressure air from the air control section 25 through the air pipe 21 so that the detected internal pressure becomes equal to a predetermined internal pressure. When they are equal to each other, the supply of high pressure air from the air control unit 25 is stopped, and the data D and the power source 9 are controlled to be sent to the display unit 90. As a result, the display unit 90 has an explosion-proof function.

The data D, which is sent to the display unit 90 and consists of a bit string of a fixed format, has serial bits based on the synchronization signal DX by the interface circuit 43, and each serial bit has a distance DD, a ship speed DS, and a rotation warning light. It is distributed to the signal DW and converted into a parallel signal. The distance DD and the ship speed DS are introduced to the lamp drive circuits 37 and 38 corresponding to the “BOW” side and the “STREN” side, respectively. The lamp drive circuits 37, 38 perform on / off control and lamp driving of the lamp circuits 31, 32, 33, 34 arranged in a dod matrix form.

The warning light control circuits 39, 40 are relay circuits for supplying power for turning on and rotating the warning lights 35R, 35Y, 35B, 36R, 36Y, 36B by the signals decoded by the interface circuit 43. For example, if the bid on the "STREN" side of the rotation warning light signal DW is 1, the relay connected to the signal light 35R is activated, and AC100V is supplied to the signal light 35R to cause the rotation / lighting operation. It should be noted that 35R to 35B and 36R to 36B can be set to operate as a shore departure warning by a command from the operation unit 8 after the berthing.

The display unit 90 is placed on the rotary pedestal 80 as shown in FIG. FIG. 4 is a view of the rotary pedestal 80 of the device of the present invention. In FIG. 4, the left side of the chain line C-C 'is a sectional view of the main part and the right side is a front view.

The rotary base 80 has a mechanism in which the rotary base 51 swivels above a fixed base 50 within a certain angle range. The base of the fixed base 50 is installed and fixed on the tower provided on the shallow bridge 101 so that the display unit 90 can be easily seen from the ship 102 on the shore. The upper portion of the fixed base 50 is in contact with the base portion 51A of the rotary base 51 via a turning ring composed of an inner ring 55, an outer ring 54 and a bearing 56.

The inner ring 55 of the turning ring is fixed to the fixed base 50 with bolts, while the outer ring 54 is fixed to the rotary base 51A with bolts as well, and the outer ring 54 rotates around the outer circumference of the inner ring 55 via bearings 56. can do. A groove is provided on the outer peripheral side of the outer ring 54 to form a gear, which meshes with the gear A in the drawing.

On the other hand, the rotation drive unit including the handle 52, the speed reducer 53, and the gear A is fixed to the side of the fixed base 50 by welding or the like at a position where the gear A and the gear of the outer ring 54 mesh with each other. Since the decelerator 53 and the gear A main shaft 63, which is the shaft of the gear A, are connected by a worm gear, the rotation axis direction of the handle is converted to the rotation axis direction of the gear A, and the rotation speed is also reduced.

With the above-described configuration, by rotating the handle 52, the rotating base 51 can be rotated according to the docking situation of the ship, the position of the operator, etc., and the visible range of the display unit 90 can be expanded.

In the present embodiment, the reduction ratio of the handle 52 and the turntable 51 is 30: 1. This speed reduction ratio can be appropriately selected by replacing the speed reducer 53.

Further, in this embodiment, the rotation angle can be adjusted by the stopper M60, the stopper S61, and the stoppers S61 and 62 shown in FIG. Since the stoppers MS61 and 62 are fixed to the fixed table 50 side and the stopper M60 is fixed to the rotary table base 51A so that both stoppers have the same plane, they rotate within the fixed angle range of the stopper S61 and the stopper S61. The table 51 can rotate. FIG. 5 shows the positional relationship of the stoppers when the rotation angle is 90 ° in a plan view of the D′-C ′ portion of FIG. 4 viewed from above the drawing.

FIG. 6 is a diagram of laying cables on the fixed base 50 and the rotary base 51. The cable 20 lacks flexibility because it passes through a metal pipe as an explosion-proof measure, and this is the same as the air air pipe 21. For this reason, the rotating part is flexible, and the pipes that are sealed at the ends to prevent the flow of air and gas are used, and the holders 71 and 72 are provided to cope with the rotation of the turntable 51. .

In FIG. 6, the holder 71 is a frame-shaped metal fitting fixed to the turntable 51, and the holder 72 is L-shaped so that the horizontal position of the fastener 74 is substantially flush with the holder 71. The above items are fixed to the fixing table 50. The holders 71 and 72 are arranged so that when the turntable 51 is at the center of the rotation angle, they substantially coincide with the center line of the rotation angle.

The pipe / air pipe 21 of the cable 20 is connected to the flexible pipe at the end of the holder 72 by the connecting portion, and the connecting portion is held by the fastening tool 74, and passes through the opening 75 of the rotary base 51. It is held by the fastener 73 of the holding metal fitting 71 and guided to the display section 90. In this embodiment, a flexible pipe made of stainless steel is used as the flexible pipe, and a nipple having a thread at both ends is used as the connecting portion. By doing so, the cable 20 and the air pipe 21 move about the rotation center of the turntable 51, so that they can be guided to the display section 90 without applying an unreasonable force.

As a modified example of the above configuration, the handle 52 may be an electric motor, and the stopper M60 and the stoppers S61, 62 may be microswitches or photosensors, so that the rotation of the rotary table 51 can be automated without manual operation. At this time, the rotation command and the stopper signal of the electric motor can be controlled by the operation unit 8 of the electric measuring unit 100A.

As another modified example of the above configuration, only the display panel 30 of the display unit 90 is mounted on the turntable 51, and the rotation warning units 35 and 36 are installed on the tower roof provided separately.

[0038]

[Effect of the invention]

 According to the present invention, by outputting the data from the measuring unit as a serial signal to the display unit as described above, the cable wiring can be reduced, and the display unit can be rotated to widen the visible range. It is possible to reduce the number of berths installed and to streamline the cost of berth measuring equipment.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a shoreside measuring apparatus according to an embodiment of the present invention.

FIG. 2 is a functional block diagram of the above embodiment.

FIG. 3 is a front view showing a display unit of the apparatus of the above-described embodiment together with a rotation base.

FIG. 4 is a partial cross-sectional view showing the configuration of the rotary pedestal of FIG. 3 in more detail.

FIG. 5 is a plan view of a D′-C ′ portion of FIG. 4 viewed from above.

FIG. 6 is a diagram showing a state of laying a cable in the rotary base of FIGS. 4 and 5;

FIG. 7 is a layout view showing an example of the layout of the berth measuring apparatus of the above embodiment, together with a jetty.

[Explanation of symbols]

 1A, 1B Sensor 20 Cable 21 Air pipe 30 Display panel 35, 36 Rotation warning light part 50 Fixed base 51 Rotation base 52 Handle 53 Reduction gear 80 Rotation base 90 Display part 100 Measurement control part 100A Electric measurement part 100B Transmission control part 101 Asahashi 102 ships

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location G08B 5/00 G01S 13/93 S 23/00 510 15/93

Claims (1)

[Utility model registration claims] 1. A transceiver for transmitting and receiving ultrasonic waves or radio waves,
It includes a CPU that processes the signal of the transceiver and measures the distance to the seaverse and the berthing speed of the ship under berth based on the elapsed time from transmitting the ultrasonic wave or radio wave to receiving the corresponding reflected wave. In a berth measuring apparatus including a measurement control unit and a display device including a display circuit configured by a light emitting element group that displays the distance and the berthing speed measured by the measurement control unit, (a) the display device includes: On the sea berth designated as an explosion-proof area, the measurement control section is installed with an internal pressure explosion-proof structure in which the interior is filled with high-pressure gas to enhance the explosion-proof property, and is installed at a location away from this explosion-proof area. Connected with a cable provided with safety measures for explosion proof, (b) the display device is rotatably installed on a fixed base over a predetermined angle range, and (c) the CPU of the measurement unit control unit, Based on the combination of the measured distance and berthing speed, it is determined whether the berthing state corresponds to a safe state, a caution state, or a dangerous state, and this determination state is transmitted as serial data together with the measured distance and berthing speed as serial data. Performing an operation to be transmitted from the display device to
(D) The display device receives blue light emitting element, yellow light emitting element, red light emitting element, serial data from the measurement control unit via the cable, converts the serial data into parallel data, and converts the parallel data. Data The interface circuit that distributes to the display circuit and the display control unit that controls the display of the judgment result, and if the judgment result distributed from this interface circuit is in the safe state, the blue light emitting element And a display control unit for controlling the display of the determination result by selectively operating the yellow light emitting element and the red light emitting element in a dangerous state, respectively. .