USER S MANUAL ENGLISH EDITION April 2017

Transcription

1 HydroBook-2F Two Frequency Hydrographic Echo Sounder USER S MANUAL ENGLISH EDITION April 2017 P.O. Box 1843, Gretna, Louisiana USA (504) marketing@unabara.us Unabara Corporation; All Rights Reserved US & Foreign Patents Pending

2 HydroBook Family of Echo Sounders During 2014, Unabara introduced our single frequency hydrographic echo sounder (200 Khz. nominal, but with agile-user selectable frequency range from 180 Khz. thru 280 Khz); with corresponding transducer beamwidths from 10 degrees to 5 degrees. Unabara s HydroBook Hydrographic Echo Sounder products utilize your survey system s Windows NoteBook PC (or laptop/tablet) as a control and display device; operation can be standalone or in the background of your HYPACK, HydroMagic, or other mapping software. All electronics and transducer elements are contained in a single underwater package denoted the Below Surface Unit (BSU). The BSU has two communication ports. COM 1 is dedicated as the control and monitoring port to communicate with the HydroBook software APP which will be installed on the user s PC. COM 2 provides depth information to your PC in standard industry formats selectable by the user from DESO, ODOM, HydroBook and others. Baud rate is selectable up to 115,200, 8N1. Data from COM 2 is used by your hydrographic mapping software (HYPACK, HydroMagic or the like) to generate a chart display if desired, and to provide realtime depths needed by your mapping software for other purposes. Both COM ports are RS-232 type but each HydroBook is provided with two RS-232 to USB adapter cables to use if your PC has only USB ports. Unabara s HydroBook family of products bring a number of firsts to the industry. Our product is the result of vertical integration of design and manufacture. We do not use low performance off-the-shelf acoustic transducers as many echo sounder manufacturers do. Our transducer element is our proprietary design integral to the BSU. Most important, our single frequency (200 Khz. nominal) transducer element design allows a minimum operating depth of 0.10 meter for the single frequency version; (Yes, 4 inches). With regard to sounding rate (ping rate), HydroBook users are not limited to 5, 6 or 10 hertz. as users of some other products are. HydroBook users may select up to 30 hertz ping rate depending upon range. Operation of the HydroBook is automatic with adaptive auto gain and auto gate; 10 Log, 20 Log and 30 Log TVG curves are applied automatically by an adaptive algorithm. A manual gate feature, more applicably termed blanking gate is provided to ignore thermoclines, pycnoclines, plankton layers, and other disruptions in the water column.

3 2017: Introduction of HydroBook-2F Two Frequency Hydrographic Echo Sounder Legacy vs. Unabara s Design Concepts The HydroBook-2F provides not only a 200 Khz. (nominal) frequency channel but also a second frequency in the low frequency range (i.e. 12 Khz., 18 Khz., 24 Khz., 28 Khz. or 30 Khz; user selectable). In the past, low frequencies were generated by linear echo sounder designs which provided the desired frequency directly. Since directivity is dependent upon the ratio of transducer dimension and the signal frequency, low frequencies generated by linear designs require large, heavy, expensive transducers. Such designs also result in significant transducer ringing which raises the minimum depth in which the echo sounder can be used; further, side lobes of the transducer result in echo returns outside of the area in which the user intends to have ensonified. In shallow waters, reverberation associated with low frequencies, together with side lobe acoustic noise, essentially make the low frequency channel unreliable. The HydroBook-2F utilizes a non-linear design (parametric) which allows a much smaller and lightweight product design. The complete Below Surface Unit (BSU), which houses the transducer elements and all electronics has a weight in air of about four pounds (1.8 kg.) and a weight in water of about one pound. Parametric echo sounders transmit two signals each of which is a slightly different frequency from the other. These two frequencies are termed primary frequencies. Due to non-linearities in the water column sound propagation, both primary frequencies interact and a new (lower frequency) is created. This newly created frequency is termed the secondary frequency. Primary frequencies are used for high frequency (i.e. 200 Khz.) determination of the initial sea bottom. Sometimes bottom conditions, some of which are referred to as liquid mud, soft sediments, etc., do not provide a true hard navigable sea bottom depth when using high acoustic frequencies. In such cases, the lower frequency (secondary frequency) is used to determine true depth from a perspective of a ship to safely navigate those waters. Also known as nautical depth, this is a point at which if the sediment density is greater, a ship cannot safely travel. Knowing the area of ensonification (Cell Size) is always beneficial to the hydrographer. In linear systems, low frequency beamwidth tends to be much wider than that of the high frequency beamwidth. Simply put, since the two derived depths are from different sized cells, directly comparison of a specific point on the sea bottom is not precisely possible. In non-linear, parametric echo

4 sounders, such as the HydroBook-2F, the directivity and beamwidths of the primary frequency and secondary frequency are more closely aligned. Lastly, in the HydroBook-2F there is a absence of side lobes which results in less volume reverberation and less reverberation from the bottom surface. General Specifications for HydroBook-2F -Frequency Range: 200 Khz. (nominal) and 12, 18, 24, 28, or 30 Khz. -Beamwidth: 200 Khz. = 7 deg. (-3 db); 12/18/24/28/30 Khz. = 3.5 deg. (-3 db) -Transducer Elements: Integrated into Below Surface Unit (BSU) -Electronics: All Integrated into Below Surface Unit (BSU) -Input Power: 12 VDC nominal (180 ma. Average; 1 amp.peak on Transmit) -Cable Length (BSU to Surface): 10 meters (33 feet) -BSU Size: 6.0 inch Diameter; 5.75 inch Height -BSU Weight: 4 lbs (in air); 1 lb. (in water) -BSU Mounting: Flange Mount or 1.25 inch NPT Pipe -Depth Ranges: Metric = 25m, 50m, 100 m, AUTO English = 80 ft, 160 ft, 330 ft, AUTO -Minimum Depth: 200 Khz. = 0.15 meters (0.5 feet) -Minimum Depth: Low Frequencies = 0.3 meters (1.0 feet) -Maximum Depth: 200 Khz. = 100 meters (330 ft.) Low Frequencies = 75 meters (248 ft.) -Source Level: 200 Khz. = +228 db; 12/18/24/28/30 Khz. = +193 db -Key Features: -Stand-alone Operation after Configuration -Integrated Electronics & Transducer (in BSU) -SVEL Correction: 1400 to 1800 m/s (4600 to 5900 m/s) -Transducer Offset (Draft) Correction -User adjustable Blanking Gate -Automatic Adaptive Tracking Gate -User selectable Ping Rates (20, 10, 5 Hz.) -Calculation & Display of Ensonified Cell Diameter -Depth Resolution: +/- 1 cm -Depth Accuracy: 0.1% of indicated depth -Calculation & Display of High/Low Frequency Bottom Loss -Data Sentences: DESO-20, ODOM DT, HBOOK2F (all of the above are dual channel concatenated data) -COM Ports: COM 1 to PC for Control; COM 2 Data Out -PC Software Compatibility: Windows XP thru Windows 10

5 HydroBook-2F Hardware Deliverables Each HydroBook system includes: - HydroBook Below Surface Unit (with 10 meter Cable & Weatherproof Plug) - BSU Adaptor Cable (BSU to COM 1/COM 2/Power Input) - USB-Memory Pod - User's Manual (English Edition) - 2 ea. RS-232 to USB Adaptors (for PC's without Serial Ports) The figure below represents a typical HydroBook-2F System including the Windows-Based Notebook PC:

6 Connecting HydroBook-2F BSU to PC The hardware deliverables drawing has shown the 10 meter cable attached to the BSU and its connection to the Adapter Cable Assembly. This assembly has DB-9 connectors for COM 1 (RED shell) and COM 2 (YELLOW shell) which plug directly into your PC s serial ports. If you only have USB ports on your PC, refer to the instructions provided with the two RS-232 to USB converter cables supplied with your HydroBook. This cable also is used to supply 12 volts d.c. power to your HydroBook. DC Power Input RED = + BLACK = - 12VDC GND 12 VDC 1 2 RED BLK DB9-F P1 COM 1 (to PC) (dedicated as Control & Monitoring Port for PC-based HydroBook APP) TXD RXD GND GRN RED BLK P1 mates with Connector on 10 meter cable to Below Surface Unit (BSU) CONTROL RS232 CABLE (J1) HydroBook COM1 COM 2 (to PC) (RS-232 Serial Depth Data for use by HYPACK or other PCbased mapping software) TXD RXD GND DB9-F GRN RED BLK DATA RS232 CABLE (J2) HydroBook COM2 Adapter Cable Assembly Connector Pinouts

7

8 Mounting Holes for Flange or Plate Threaded (X4) Depth = 0.5 inch (on inch bolt circle) Threaded for 1 1/4 inch NPT Pipe Depth = 1.15 inches Cable Exit Cable Diameter = 0.35 inch (Length = 10 meters) inches TOP VIEW

9 Installing the HydroBook-2F PC APP Software Your HydroBook-2F is supplied with a USB-Memory Pod which contains the required HydroBook-2F PC APP software and SOFTWARE LICENSE AGREEMENT. AFTER READING AND AGREEING TO THE LICENSE, INSTRUCTIONS (Installation Wizard) WILL STEP THE USER THRU INSTALLATION OF THE HYDROBOOK-2F PC APP. The Memory Pod also contains this User s Manual (in PDF format). HydroBook-2F APP Screens & Their Use Your HydroBook APP has three screens as part of its graphical user interface on your PC. When you first boot-up the APP, the MAIN SCREEN will be shown (in STANDBY mode). See next page for the MAIN SCREEN in RUN mode. This screen serves two purposes: 1) To allow the user to view real-time depths and other data, on demand, during your survey; 2) To allow the user to access the other two APP screens; SETTINGS SCREEN (Two pages forward) and CHART SCREEN (Four pages forward). Upon seeing the MAIN screen the first time, the user should select (click on) the SETTINGS icon (button). This will cause the SETTINGS screen to be displayed. The user can then change any of the default settings; and, of course, later use this screen any time he wishes to change any parameter. Before closing the SETTINGS screen, user must click on the APPLY icon (button) to save any changes made. Then select RUN icon (button) to begin sounding. Selecting (clicking on) the CHART icon (button) causes the mini-chart to be displayed.

10

11 Offset = Draft + Tide (Use UP/DN controls to select applicable Offset) Units (Selects Meters or Feet) Ping (sounding) Rate to be selected by User (5, 10 or 20 Hz.) Output Format (from COM 2) User selected from DESO-20, ODOM DBT or HydroBook-2F Sound Velocity (Use UP/DN controls to select applicable velocity) Gate On/Off Blanking (Use UP/DN controls to select the depth above which user wants echo returns ignored; used to keep thermoclines and biological layers from causing false bottom depth returns) Frequency of Lower Channel (User selectable as 12 Khz., 18 Khz. or 24 Khz.) Control COM PORT (Select applicable serial port on PC) Data Port Baud (from COM 2) to be selected by User PC COM Port # where PC EXPORT DRIVER is available SETTINGS SCREEN Special Operational Notes for LOW FREQUENCY channel: 1) To prevent detection of multiple bottom echoes, an end of sub-bottom gate is included. When enabled by user, only bottom signals inside the sub-bottom gate are processed. This gate is enabled by turning On/Off the Tracking Gate (see Settings Screen).

12 2) If the 20 Hz. is too rapid for the LOW frequency in shallow waters, the effective ping rate can be slowed by changing the depth range from 25 meters (80 feet) to 50 meters (160 feet) or 100 meters (320 feet) while leaving the maximum ping rate set at 20 Hertz. (In doing this, a low frequency bottom smoothing algorithm is applied to the LOW frequency channel only).

13 Offset (GREEN Line is shown if offset has been entered) Sea Bottom at present boat position (scrolling RED line) Trace of sea bottom, color-coded to show real-time acoustic bottom loss (as measured via the 200 Khz. frequency) at that specific sounding point) Trace of sea bottom as derived from Low Frequency Channel; not coded, color wise, for bottom loss but bottom loss is available instantaneous on Main Screen and via data output Instantaneous Bottom Loss (db) (for 200 Khz. nominal channel) Scale Lines Error mark is shown when a ping reply is missing Note: BLANKING is set to 0.50 meters depth in this example. This is denoted on the chart as a VIOLET line shown above at the blanking depth Instantaneous 200 Khz. derived sea bottom depth; dbs = depth below surface Instantaneous Low Frequency derived sea bottom depth; dbs = depth below surface Real-Time values for ECHO, Transmission Loss, and Bottom Loss for 200 Khz. High Frequency Channel CHART SCREEN

14 APPENDIX A HydroBook-2F Data Outputs

15 SENTENCES AVAILABLE FROM HYDROBOOK-2F BSU COM 2 ODOM EchoTrac OUTPUT "dbt", depth corrected for offset. 18 byte ascii, Units: ET=feet, et=meters Space Record terminator feteb ddddd ddddd<cr> Field Number 1. Fix Mark: F=fix, <SP> no fix 2. Units: ET=feet, et=meters 3. Data Error: E=err HF ch, O=err LF, D=err BOTH ch, <SP> no error 4. Band: B=dual band 5. Space 6. HF Depth (leading zeroes): 7. Space 8. LF Depth (with leading zeroes) 9. Record Terminator <CR> (0x0D)

16 DESO-20 Output Sentence 24 Characters Ex: DA mDB m<CR><LF> 24 Characters Field Number 1. DA = High Frequency Data Channel 2. HF Depth with leading zeroes 3. Units of measure; m = meters, f = feet 4. DB = Low Frequency Data Channel 5. LF Depth with leading zeroes 6. Units of measure; m = meters, f = feet 7. Record Terminator <CR> (0x0D) 8. Record Terminator <LF> (0x0A) FEET: Less than 100 ft; Greater than 100 ft; METERS:

17 HBOOK-2F Data Output Sentence NOTE: All parameters are returned in metric units only. 43 Fixed Length ASCII Characters (leading zeroes displayed) a b c d e Ex: DEA ddd.dd -sss eb ddd.dd -sss -tt.t rrrx <CR><LF> Field Number 1. Dynamic Parameters List 2. HF Data error: E = gate error, <SP> = no error 3. Band: HF data 4. HF Depth: (meters only) 5. HF Reflectivity: -dbv, re: 1Vrms 6. LF Data error: e = gate error, <SP> = no error 7. Band: LF 8. LF Depth: (meters only) 9. LF Reflectivity: -dbv, re: 1Vrms a. Water Temperature (deg C only) b. Range: 25, 50, 100m (meters only) c. Mode: A = auto, M = man d. Record Terminator 1: <LF> (0x0A) e. Record Terminator 2: <CR> (0x0D)

18 DATA SENTENCE AVAILABLE FROM PC COM PORT PC EXPORT DRIVER:IS ALWAYS ASSIGNED TO COMx:19200,8,N,144 ASCII Characters a b c d e f g h I j k l UPC,AE,ddd.dd,BE,ddd.dd,oo.oo,vvvv,u,bb,xx <CR> <LF> Field Number 1. Unabara PC Export File: 2., Delimiter 3. A = HF channel: 4. HF depth error: E=depth error, <SP>=no error 5., Delimiter 6. HF depth data: 7., Delimiter 8. B = LF channel: 9. LF depth error: E=depth error, <SP>=no error a., Delimiter b. LF depth data: c., Delimiter d. Draft Offset: e., Delimiter f. Speed Of Sound Velocity: g., Delimiter h. Units of measure: M=meters, F=feet i., Delimiter j. HF Bottom Loss (-40dBV) k., Delimiter l. Nul m. Record Terminator: <CR> (0xD) n. Record Terminator: <LF> (0xA)

19 APPENDIX B HydroBook-2F BSU Remote Control Commands

20 The following commands provide for remote control of the HydroBook-2F BSU via an external processor or telemetry link. All control must be via the HydroBook-2F BSU communications port COM 1 at the fixed baud rate of COM1:115200,8,N,1. The sentence to follow sets or programs the HydroBook-2F BSU s Static or non-changing parameters such as: Offset (m), Velocity (m/s), Blanking (m), Frequency (khz),com2 Baud Index, COM2 Data Sentence Index, Max Ping Rate (Hz), Range (m), Units, Gate, Standby. All parameters in this sentence are in metric units and must be converted by an external processor or control program. 41 fixed characters NOTE: All parameters are SPACE delimited except record terminators. a b c d f g S +o.oo vvvv bbb.bb fff p s pp rrr XUGS <LF> <CR> Field Number 1. Static Parameters Block 2. Offset: +/- Meters 3. Speed of Sound Velocity: m/s 4. Blanking Gate: Meters 5. Frequency: 012,018, 024 KHz 6. COM2 Baud Rate Index: 0=9600, 1=19200, 2=38400, 3=57600, 4= COM2 Data Sentence Index: 0=ODOM-DBT, 1=DESO-20, 2=HBOOK2F 8. Ping Rate: 5, 10, 20 Hz 9. Depth Range: 025, 050, 100 Meters a. Mode: A=automatic, M=manual b. Data Sentences Units of Measure: M=Meters, F=Feet

21 c. Tracking Gate: g=off, G=On d. Standby Status: R=Run, S=Stdby (not used) e. Record Terminator 1: <LF> (0x0A) f. Record Terminator 2: <CR> (0x0D) g. These parameters are non-volatile and are saved in the BSU s flash memory and will survive power resets. This sentence is the real time depth data parameters returned by the HydroBook-2F BSU on its COM 1 control port at COM 1:115200,8,N,1 Real Time Parameters: Data Err, Band, Depth (m), Reflectivity (-dbv, re: 1Vrms), Temp (degc), Depth Range (m) and Mode. NOTE: All parameters are returned in metric units only. 43 Fixed Length ASCII Characters (leading zeroes displayed) a b c d e Ex: DEA ddd.dd -sss eb ddd.dd -sss -tt.t rrrx <CR><LF> Field Number 1. Dynamic Parameters List 2. HF Data error: E = gate error, <SP> = no error 3. Band: HF data 4. HF Depth: (meters only) 5. HF Reflectivity: -dbv, re: 1Vrms 6. LF Data error: e = gate error, <SP> = no error 7. Band: LF 8. LF Depth: (meters only) 9. LF Reflectivity: -dbv, re: 1Vrms a. Water Temperature (deg C only)

22 b. Range: 25, 50, 100m (meters only) c. Mode: A = auto, M = man d. Record Terminator 1: <LF> (0x0A) e. Record Terminator 2: <CR> (0x0D) HydroBook BSU Remote Control Commands On Communications Port 1 at COM 1:115200,8,N,1 1. ASCII places BSU in the standby mode. 2. ASCII character # places BSU in the run mode 3. ASCII control character <Ctrl><B> places BUS in the single ping mode. 4. ASCII control character <Ctrl><P> initiates a single ping and then enters the standby mode and waits for the next command. 5. ASCII control character <Ctrl><X> causes the BSU to exit the single ping mode and return to the run mode. 6. All of the above BSU commands are volatile and are not saved in the BSU s flash memory and will not survive power resets. BSU PROGRAMING EXAMPLE: 1. Send ascii to place BSU into STANDBY mode 2. Build your configuration command example: Record Type, Static Parameters to S Transducer Offset to +0.75m (always metric added to depth) Svel to 1510m/s (always metric) Blanking Gate (if used) to 1.50m (always meteric) Transmit/Receive Frequency to 024KHz COM2 Baud Rate to 19200b/s COM2 Data Output sentence to ODOM DBT Ping Rate to 10Hz Maximum Depth Range to 025m (always metric) Operational Mode to MANUAL Units of Measure to FEET (returns all COM2 data in FEET) Tracking Gate to ON Standby Status to RUN S MMGR <LF> <CR>

23 3. Delay by 500 milliseconds 4. Write new configuration ascii string to BSU COM1 at ,1N8 baud rate 5. A ascii configuration string will be returned. 6. Do a read after write and compare the string returned with the string sent. If successful the two strings will match. 7. Send ascii character # for enter the RUN mode. BSU SYNCHRONEOUS MODE EXAMPLE: From time to time multiple echosounders must operation together. Simultaneous operation may cause interference problems between the two. To solve this problem the HydroBook can be operated in the synchronous mode. To enter the synchronous or single ping mode all commands are sent to the HydroBook BSU over BSU s COM1 port at ,8,N,1. Sending an ASCII control character <Ctrl><B> places BSU in the single ping mode and sending an ASCII control character <Ctrl><X> exits the single ping mode. While in the single ping mode sending an ASCII control character <Ctrl><P> initiates a single ping and then enters the standby mode and waits for either a <Ctrl><P> or <Ctrl><X> command. There are two ways to exit the synchronous or single ping mode; one is to send an ASCII control character <Ctrl><X> or to perform a power reset. While in the single ping mode, echosounder configurations changes can t be made and data from both COM1 (control port) and COM2 (data port) are returned immediately after the single ping command <Ctrl><P> is sent to the BSU. To make any echosounder configurations changes you must first exit the single ping mode by sending an ASCII control character <Ctrl><X>. The transmit latency for one ASCII control character at b/s is 87usec.