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Offline willy bayotTopic starter
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« Reply #30 on: January 03, 2012, 04:14:18 am »
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Hi all,

We have received from production the new batch of boards designed for the MarkIVB systems.
All these boards have been tested one at a time in Canada and will come in Belgium within a week.
The updated price structure document is available there:

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http://users.skynet.be/fa352591/MarkIVB_Jan2012_prices.pdf


Willy

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Offline willy bayotTopic starter
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« Reply #31 on: August 29, 2012, 01:49:49 am »
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We have replenished our stock of MarkIVb boards with a new production series.
We are now able to assemble, test and deliver ten more MarkIVb systems.

Willy

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Offline willy bayotTopic starter
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« Reply #32 on: July 15, 2013, 09:55:08 am »
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Hi all,
It's now a long time that we posted any comment on this forum.
However, the normal sales and support activities related to our PPM MarkIVC are going on.
The only sizable info we could report at this point about the underwater sensor is that we have improved it one step further by using an hermaphroditic panel connector used in the professional diving industry (

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www.wet-connect.com
). It is rated for a depth of 10000ft.
For underground surveys, the weight of the sensor is an important factor. Thus, We had switched for coil winding using aluminum wire which gives a considerable weight advantage.
However, the minus side of that is that this type of wire has a higher electrical resistance and thus, gives less polarization current for the same power voltage.
For the underwater surveys, the weight is not important (it is even better to get an heavier sensor), thus, we have switched back to the standard copper wire.

We have also very much upgraded and improved the PPM Utility program for both underwater and underground surveys in real-time operation and in post-processing.
This program can now accept the NMEA data stream from an external GPS replacing the integrated GPS.
It also can complement the GPS data from the integrated GPS with the depth data (as NMEA sentences) coming from a sonar and plot it along with the PPM data.
We have upgraded the generation of survey paths and waypoints including the automatic generation of full survey routes made of parallel survey lines based on a reference waypoint.
For the post-processing of grid-shaped survey files, we are now able to interpolate the readings and generate/display on this program 2D contoured, colored grids (exactly as Surfer does it).
These grids can then be scanned by the program to locate and mark potential targets as monopoles and dipoles with a measurement of their height and surface.

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Offline willy bayotTopic starter
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« Reply #33 on: November 12, 2013, 03:25:15 am »
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Hi all,

We are now working on a Bluetooth connectivity between the PPM control box and its PPM Utility program running on PC under Windows.
We shall also be able to talk to an external GPS through Bluetooth.
Together, these capabilities will suppress all the cabling between the devices and the user interface.
This will allow the PPM control box to be carried in a backsack for underground surveys leaving the hand of the operator free.
It will allow the operator to stay in the cabin of the boat for underwater surveys.

With the advent of Windows 8.1 tablets (soon released with smaller 8 inch screens), the walking operator will only have to carry a light tablet during the survey sessions.
The design of the control screen of the PPM Utility program has been simplified  to be operated in this mode. Larger buttons have been provided to enable the operator to work with gloves.
The fact that there will be no more cabling (USB...) going out from the tablet permits to easily insert the tablet in a waterproof envelope selected for its screen size.

Willy

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« Reply #34 on: November 12, 2013, 07:39:10 am »
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Nice enhancement, Willy! You've put a lot into this project. Thank you for the update.

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« Reply #35 on: November 12, 2013, 05:49:34 pm »
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Thank-You for the progress report Willy , pretty cool stuff now  !!

I am checking the information on the first post you made .  Since I am back on this forum again , I need to do a lot of catching up !!


Best Regards ..................Eugene





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« Last Edit: November 12, 2013, 05:53:57 pm by Eugene52 »
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Offline willy bayotTopic starter
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« Reply #36 on: November 28, 2013, 02:34:30 am »
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Quote:Posted by willy bayot
Hi all,

We are now working on a Bluetooth connectivity between the PPM control box and its PPM Utility program running on PC under Windows.
We shall also be able to talk to an external GPS through Bluetooth.
Together, these capabilities will suppress all the cabling between the devices and the user interface.
This will allow the PPM control box to be carried in a backsack for underground surveys leaving the hand of the operator free.
It will allow the operator to stay in the cabin of the boat for underwater surveys.

With the advent of Windows 8.1 tablets (soon released with smaller 8 inch screens), the walking operator will only have to carry a light tablet during the survey sessions.
The design of the control screen of the PPM Utility program has been simplified  to be operated in this mode. Larger buttons have been provided to enable the operator to work with gloves.
The fact that there will be no more cabling (USB...) going out from the tablet permits to easily insert the tablet in a waterproof envelope selected for its screen size.

Willy



The tests of the Bluetooth link have been successful.
This option will not be very expensive as it was simple to implement.

Willy

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Offline willy bayotTopic starter
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« Reply #37 on: January 20, 2014, 08:05:22 am »
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Our PPM MarkIVb system is now used by a professional company whose main job is to detect and remove UXO in France.
Several upgrades have been applied to our support system to facilitate this job.
UXO detection projects usually require large surface area to be systematically scanned to detect small, shallow but also large and deep explosive weapons like bombs, shells, grenades and land mines. One side effect is to eliminate as much as possible the shallow ferrous debris in order to spare a lot of useless digging.
During the passed wars, some regions have been riddled with many bombings and shellings sometimes during long periods.
As a consequence, some area contain a large number of UXO buried at various depths.

One specific type of upgrade applied on the operational PPM system was to make its carrying more comfortable during the long survey sessions.
The second type of upgrade has been applied on the post-processing system to facilitate and speed up the target detection on the survey grids.
The third upgrage was to facilitate the pinpointing on the ground of the targets detected during the post-processing.
Some of these upgrades are now operational in the field and some are still in prototyping phase.

The operation of the PPM is being optimized by the mounting of the control box, the GPS and its antenna, the battery and the sensor in a backpack leaving the hands of the operator free. The human-interface has been implemented on a 8" or 10" tablet inserted in a watertight plastic envelope and connected to the PPM control box through a Bluetooth link. The shape of the survey sessions is controlled through a precise GPS system.

The windows-based post-processing system has bee upgraded with a 2D colored grid generation process and an automatic target detection system.
The figure 95-1 attached shows the GPS and PPM tracks as they appear during the real-time session or during the review of a survey file.
You can see the numerous parallel survey lines shown by the 2D GPS plot, the field gradients displayed as variable size color bubbles and the vertical barchart showing the variations of field gradients over time. In this case, the rectangular area covered by this session is 40x40m.
Already here, some potential targets are visible. They can be located with their GPS coordinates using this window.
Then, a 2D colored contour grid is generated by a sophisticaed interpolation algorithm. This is shown in figure 95-2.
The potential targets are now much more visible. The general average field level is colored in light green and the sensible variations of field gradient are colored in warm colors for positive gradients while negative gradients spots are colored in cold colors.
From this grid, it is now possible to manually mark and list the location of potential targets and the data to be used for the evaluation of location, size and depth. From this list, it is then possible to generate a list of GPS waypoints to be used later for target pinpointing.

From this grid, it is also possible to start an automatic target detection process giving for example the figure 95-3. This process detects all the field gradients exceeding a given threshold, measuring their surface and height and marking them on the 2D grid.
Most targets generate what is called 'dipoles', i.e. a positive field peak closed to its corresponding negative peak.
Some of them reduce to 'monopoles' made of a single positive or negative peak.

Lastly, we have upgraded the real-time system to define the shortest route between the target list and to navigate the operator through that route using a virtual compass. See figure 95-4.

Willy

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« Reply #38 on: April 13, 2014, 09:09:39 am »
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Hi all,

During the last few months, our new developments have mainly targeted the 'PPM Utility' PC-based program.
We have published a summary of its latest list of functions on our web site :

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http://users.skynet.be/fa352591/index.htm


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« Reply #39 on: October 06, 2014, 04:22:03 am »
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Hi all,

We are proud to announce the release of our new MarkVII PPM system and its corresponding web site.
See

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www.precisemag.com


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