Sound Reception Device SRD 414/2 Elephant Ears

Transcription

1 Sound Reception Device SRD 414/2 Elephant Ears Subject to alteration! 09/02 SW 116e

2 THE TASK Sound Reception Device SRD SRD 414/2 Elephant Ears BSH 6289/001/02 "Every vessel shall at all times maintain a proper look-out by sight and hearing as well as by all available means appropriate in the prevailing circumstances and conditions so as to make a full appraisal of the situation and of the risk of collision." (Source: International Regulations for Preventing Collisions at Sea 1972 (COLREG 1972), Part B, Section 1, Rule 5) SOLAS Chapter V Resolution MSC.99(73) Regulation 18 - Approval, surveys and performance standards of navigational systems and equipment and voyage data recorder Description Sound reception systems are acoustical electronic navigational aids to enable the officer on the watch to hear outside sound signals inside a totally enclosed bridge in order to perform the look-out function as required in the international Regulations for Preventing Collisions at Sea, They should, in addition to the general requirements contained in Resolution A694(17), comply with the following minimum functional requirements. Functional requirements Sound reception systems should be capable of receiving sound signals from all directions in the audio band 70 Hz to 820 Hz, reproducing incoming sound signals acoustically inside the bridge, indicating the approximate direction of incoming sound signals to determine at least whether the sound signal being detected is forward or abaft of the beam and from which side of the ship it is being detected and suppressing unwanted background noise and allowing reception of meaningful sounds. Method of presentation Incoming sound signals should be reproduced inside the bridge by means of at least one loudspeaker. The volume should be adjusted by means of one volume control only. The volume control should be capable of being set so that the sound pressure level of an incoming signal only is at least 10 db(a) above the bridge noise level. There should be a display which gives a visual indication for at least 3s of the incoming signals and their approximate direction. Installation The microphones should be installed in such a way that they are as far from noise sources in the ship as is reasonably practicable and wind induced noise and mechanical vibrations are reasonably reduced. The display should be installed so that it is visible at least from the conning position. The loundspeaker(s) should be installed so that incoming sound signals are audible at all positions inside the bridge. Regulation 19 - Carriage requirements for shipborne navigational systems and equipment It is compulsory to fit all ships constructed on or after 1 July 2002 with navigational systems and equipment according to paragraphs 2.1. to 2.9. of Regulation 19. The modification relevant to sound signal systems is described in paragraph that says all ships irrespective of size shall have when the ship's bridge is totally enclosed and unless the Administration determines otherwise, a sound reception system, or other means, to enable the officer in charge of the navigational watch to hear sound signals and determine their direction. IMO Bild Regulations according to the International Maritime Organisation (IMO) and its suborganisation Maritime Safety Committee (MSC)

3 SRD 414/2 Elephant Ears The SRD 414/2 Elephant Ears represents a new dimension of sound reception systems and therefore is an innovation regarding navigational equipment on board of ships. General Features - digital technology - simple installation with only one microphone unit - effective noise suppression securing reliable system performance - accurate direction detection of incoming signals - clear and visible direction indication - easy to operate - type approval according to test conditions as specified in IEC (Maritime Navigation and Radio Communication Equipment and Systems) - BSH approval - class approval - comply to SOLAS Chapter V Resolution MSC.99(73) Regulation 18 and 19 Components and technical data The sound reception system SRD 414/2 Elephant Ears consists of two main components: Master Control Panel - for indication of the sound direction and for reproduction of an audible signal inside the bridge with 8 LED's, a volume control and dimmer for panel or console arrangement Master Control Panel Voyage Data Recorder THE SOLUTION - As laid down the revised SOLAS Chapter V Regulation 20, it is now obligatory for passenger and other ships of 3000 gross tonnage and upwards constructed on or after July, 1 st 2002 to carry voyage data recorders to assists in accident investigations. - The new sound reception system SRD 414/2 Elephant Ears therefore provides an interface for the connection with VDR. Microphone Sensor Unit - for detecting sound signals located on top of the bridge superstructure with 4 microphones and a metal mesh cylinder on a rigid column Power supply is required at 24 V DC, + 30% / - 10%. The SRD 414/2 Elephant Ears receives and indicates sound signals within a frequency range of Hz. The Microphone Sensor Unit of this sound reception system has the protection type IP 56. Installation Plan Microphone Sensor Unit

4 Cruise Liner >>Brilliance of the Seas<< with ZÖLLNER Signal Equipment: 3 Zet-Horns 1 Automaton Electric Bell and Gong Elephant Ears SRD 414 RADEWISCH 40 D KIEL P.O.BOX 7017 D KIEL TEL / FAX signal@zoellner.de

5 Bedieneinheit Master Control Panel SRD 414/2 144 Sound Reception Device SRD 414/2 Elephant Ears BSH 6289/002/04 VOLUME DIMMER 138 Einbauöffnung: 138 x 138mm Hole for Installation: 138 x 138mm Einbautiefe: ca. 160mm Plug in depth: ca. 160mm Schutzart: IP 21 Gewicht: 1,6 kg protection type: IP 21 weight: 1,6 kg Änderung vorbehalten! Subject to alteration! ZÖLLNER KIEL Ph

6 Mikrofoneinheit SRD414/2 Microphone Sensor Unit SRD414/2 255 "F" Metal mesh cylinder Steckmetall- Zylinder FRONT Microphones 4 Mikrofone NOTE: Fixing of mast to foundation to follow "F" orientation marks on unit Kabeldurchmesser max. 15 mm cable diameter appr. 15 mm Anmerkung: Mikrofoneinheit muß entsprechend der Richtungsmarkierung "F" angebracht werden Buttom flange holes to be mounted as on drawing Flanschlöcher müssen entsprechend der Zeichnung angebracht werden. Ø150 Ø110 Schutzart: IP 56 Gewicht: 7,2 kg protection type: IP 56 weight: 7,2 kg Änderung vorbehalten! Subject to alteration! 4 x Ø18 ZÖLLNER KIEL Ph

7 Operating Instruction Sound Reception Device SRD 414/2 1/5 1 Introduction On a vessel with a totally enclosed bridge the sound reception system serves as an acoustic electronic navigational aid which alerts the officer on the watch to outside sound signals from other ships. The system displays the direction of the incoming sound in order to perform the look out function as required in the International Regulations for Preventing Collisions at Sea, In addition to the requirement in Resolution A.694 (17) the system fulfills the following functional requirements (ref. MSC 86/70 adopted on 8 December 1998, Recommendations on Performance Standards for Sound Reception Systems, Annex 1): Receiving sound signals from all directions in the audio band 70 Hz to 820 Hz by means of four microphones Reproducing incoming sound signals acoustically inside the bridge Indicating the direction of the incoming sound signals on an optical display Suppressing unwanted background noise and allowing reception of a meaningful sound 1.1 Features State of the art digital technology Future new stringent performance standards incorporated Effective noise suppression securing reliable system performance Accurate direction detection of incoming signals Clear and visible direction indication Simple installation with only one microphone unit Easy operation Mute control input for ship's own whistle blocking Compliance with IMO MSC 180/23/Add 2 Annex 17 Type approved according to test conditions specified in IEC (Maritime Navigation and Radiocommunication Equipment and Systems) Type approval BSH approval Patent pending 2 Construction The sound reception system type SRD 414/2 consists of two main components: The master control panel for indication of the sound direction and for reproduction of an audible signal inside the bridge The microphone sensor unit located on top of the bridge superstructure for detecting the incoming sound signals Bo/Pi ZÖLLNER - KIEL e

8 Operating Instruction Sound Reception Device SRD 414/2 2/5 2.1 Master Control Panel SRD 414/2 The master control panel is equipped with a display with 8 LEDs for directional indication, one dimmer control for the LEDs and one volume control for the built-in loudspeaker. The volume control and the dimmer control have background illumination. The unit has a standard marine layout and is arranged for easy mounting. The unit has black colour/finish. 2.2 Microphone Sensor Unit SRD 414/2 The unit consists of a small seawater resistant sensor unit with 4 microphones, designed for rough environmental conditions. It is readily assembled with a connection box for external cable connection and a metal mesh cylinder on a rigid column. All precautions for materials used, finishing and final material treatment were taken to develop a product which can withstand the corrosive atmosphere on board a ship. 3 Location The microphone sensor unit shall be placed far from large obstructions on top of the bridge superstructure, ideally on a separate rigid mast. The actual position must be arranged on location. The sensor unit is readily assembled with a connection box on the column, easy for bolting to the ship foundation and connection to the ship's external cabling. The master control panel shall be installed in the bridge control desk or conveniently in the bridge front, visible for the officer on watch. 3.1 Distances to the magnetic compass The following distances to the magnetic compass are necessary: master control panel: 2 m microphone sensor unit: 1.5 m 4 Technical Data 4.1 Dimensions and technical data Master Control Panel SRD 414/2: 144x144x200 mm, for panel or console arrangement, mounting see drawing Microphone Sensor Unit SRD 414/2: Column 780 mm high with microphone unit and connection box, mounting see drawing Cable connection: see drawing Power supply: 24 V DC, +30 / -10 % Frequency range: 70 Hz to 820 Hz Protection: IP 56 (microphone sensor unit), IP 21 (master control panel) Bo/Pi ZÖLLNER - KIEL e

9 Operating Instruction Sound Reception Device SRD 414/2 3/5 4.2 Cable connection 6 twisted pairs, each core 0.5 mm 2 and common screened/armoured, standard fire retardant marine cable for fixed installation in ships, between microphone sensor unit and master control panel. After cable connection with the solid connection of the screen/armour to the gland/terminal box at the microphone sensor unit, the gland shall be fitted with heat shrinkable tubing. At the master control panel the earthing terminal/housing shall be connected solidly to the ship main earthing. 4.3 Drawings Drawing No Date/Rev. Note master control panel: layout & mounting microphone sensor unit: layout & mounting cable connection diagram Installation and adjustments The units shall be installed as indicated above and according to the drawings. For orientation and fixing of the microphone unit refer to the mechanical installation drawing. The microphone sensor unit shall have a solid earthing connection to the ship hull. Supply and signal wiring shall be connected according to the cable connection diagram. Once the control box is connected to the power supply, a short tone and full indication on all LEDs will indicate that the system is working properly. After a short period of time the master control panel will work in operating mode, only with low illumination at the volume and dimmer controls. No further checking and adjustments are necessary. 5 Operation 5.1 Operation Once the control box is connected to the power supply, a short tone and full indication on all LEDs will indicate that the system is working properly. After a short period of time the master control panel will work in operating mode, only with low illumination at the volume and dimmer controls. The signal detecting properties can be checked by releasing a tone close to the microphone sensor unit. While the signal is being released the master control panel shall give a reproduced sound and indicate the signal direction Bo/Pi ZÖLLNER - KIEL e

10 Operating Instruction Sound Reception Device SRD 414/2 4/ Sound adjustment The sound level is adjusted by turning the volume control switch. A built-in feature secures a minimum level for safety precautions Illumination level The lighting level on the LEDs is adjusted by the dimmer control. A built-in feature secures a minimum level for safety precautions. 6 Maintenance The system is almost maintenance-free. Every 2 to 3 months the metal mesh cylinder and the microphone openings must be cleaned from dirt, salt crystals or ice. 7 Trouble shooting If the system is not working properly, few and simple trouble shooting routines can be used to determine the location of the failure. 7.1 Master Control Panel Check the power supply of 24 V DC between terminals 1 and 2 at the terminal strip power supply 24 V DC. The measurements shall be "+" at terminal 1 and " " at terminal 2. Make sure that the unit is not blocked (deactivated). The unit is blocked if a voltage of V DC is connected to terminals 1 and 2 at the terminal strip mute/blocking. Check the power supply to the microphone sensor unit at the terminal strip cable to sensor terminal 9, 10 and 11, terminal 9 is reference (0 V), the voltage shall be -12V at terminal 10 (ref. 9) and +12 V at terminal 11 (ref. 9). Check all wiring and termination according to cable connection diagram. Make sure that the cables at terminals 1 to 8 do not have any earthing connection. Disconnect cable connector cable to sensor. Measure the resistance with an ohm meter at all terminals from 1 to 8 with the reference to terminal 9. The resistance shall typically be kohm. 7.2 Microphone Sensor Unit Check the power supply. At the terminal strip preamplifier terminal 9, 10 and 11, terminal 9 is reference (0 V), the voltage shall be -12V at terminal 10 (ref. 9) and +12 V at terminal 11 (ref. 9). Check all wiring and termination according to cable connection diagram. Make sure that the cables at terminals 1 to 8 do not have any earthing connection Bo/Pi ZÖLLNER - KIEL e

11 Operating Instruction Sound Reception Device SRD 414/2 5/5 7.3 Control of signal wiring Disconnect 2 cables at the microphone sensor unit ex pair no. 1, terminal 1 and 2. Short circuit the cables and measure the short circuit at the master control panel. Repeat this with all 4 pairs, terminals 1 to 8. Disconnect 1 cable at terminals 1 to 8 at the microphone sensor unit and short circuit to terminal 9 (GND). Check this short circuit at the master control panel. 8 Repair on bord A repair on board is not possible. If the trouble shooting measures do not lead to a positive result, the microphone sensor unit or master control panel must be replaced by a new unit Bo/Pi ZÖLLNER - KIEL e

12 Anschlussplan Connection Diagram SRD 414/2 X3 Anschluss zum Vorverstärker Connection to preamplifier SRD 414/2 Master Control Panel Unterbrechung Signalaufnahme Mute blocking 12-24V DC high active X2 + 1 Alarm Ausgang Signal Output TX Serielle Schnittstelle Serial interface RS 232 NC RX GND Versorgung Power supply 24V DC X Own ship signals Ship Voyage Recorder ext. signal emergency alarm + Microphone Sensor Unit Microfoneinheit Automat A Verbindungskabel z.b. FMGCG 2 x 6 x 0.5mm² twisted pair verdrillt und doppelt abgeschirmmt verlegen Automat 6+S Connection-cable 2 x 6 x 0.5mm² twisted pair screen - inner sheath copper wire - outer sheath Automat 10+SBG V DC Änderung vorbehalten! Subject to alteration! MH Rev02 ZÖLLNER KIEL

13 SRD 414/2 TTG Test Tone Generator 65 Elephant Ears 98 TONE Test Tone Generator Sound Reception Device SRD 414/2 TTG 23 Änderung vorbehalten! Subject to alteration! ZÖLLNER KIEL Ph

14 SRD Testbox Test procedure Page 1 of 1 Introduction For the purpose to improve and have more convenient test procedures and where owners and yards ask for guidelines for general testing, as an option a seperate SRD testbox can be used for testing. The testbox is also applicable for testing the system where environmental noise suppression prevents other individual testing. Design The testbox is designed as a seperate handheld sound signaling device with built in battery and push button for test and test sound activation. An optional minor push button box with an extended cable can be connected to the main testbox. Test set up and testing The system is connected, commissioned and working in normal mode. The testbox shall be used handheld or fixed at approx. 30 cm from the mesh cylinder in front of the microphone. The loudspeaker releasing the test sound is on the reverse, therefore the test box must be held with this side towards the microphones! The testbox is placed into position, prepared and made ready for use at the Microphone Sensor Unit. If the Microphone Sensor Unit is placed beyond normal access, it is possible to fasten the testbox to a rod/metal bar and connect the extension cable. When test personnel is ready, the following procedure is to be followed: connect the system to the power board max. 1 minute after power connection activate the push button on the testbox this is confirmed by a sound from the Master Control Panel the system is in test mode now make test with a pulse on the push button, giving a double tone signal within the range of 300 to 350 Hz when the tone is released, the LED at the testbox is constant, but returning to pulsating light Test can now be procured by activating the push button with a pulse on the testbox. By holding the testbox at the given distance in front of the microphone, the direction indication will appear on the Master Control Panel. All directions can now be checked. After 5 minutes the system will automatically revert to normal mode. In normal mode it is also possible to use the testbox as control for the system. Note: It shall be noted that not all serial numbers of the SRD 414/2 have the special feature installed (e prom/software) for the special test set up. The test in normal mode is possible with all models. As the normal noise reduction facilities are working in test mode, it shall be noted that high ambient noise can disturb the test results. Check the built in battery voltage (9.5 V) frequently (test unit has a low power consumption /M.H. ZÖLLNER KIEL Änderungen Vorbehalten