ИМБ (IMB) Pulse Induction Metal Detector

[eclipse]

ИМБ (IMB) Pulse Induction Metal Detector is a russian military class pulse induction metal detector developed in 1985 designed to locate mines.
It's really heavy.. arround 20kg.



They are hard to come by and cost 2000-4000$ in my research.
It's a two box construction with 3 parts: coil construction, transmit-receiver and power supply.
The transmitted signal is bipolar half sine wave. Rumors say this device has been reused in Anker Pulse, Fau Pulse and few others (speculation).
Prices of the clones are roughly the same as the original device.

Wave forms:




Block diagram:




Original manual in Russian (too big to upload):
http://s000.tinyupload.com/download....71878902631965

Partial schematics /with errors/ but the only one I could find:

Schematic.pdf
PSU.pdf

[Orbit]

One of my cousins when it came to the disintegration SSSR he bought from eastern Germany from military waste Russian magnetometer It works robustly and difficultly and it looks stupid however in testing shows incredible results to this day I was shocked I tested several modern magnetometers none of them can not half of that Russian military magnetometer .Otherwise Anker not sold outside Russia Pulse Anker ie (ibm) no matter how much you pay!

[Carl-NC]

I've long considered half-sine to have a lot of untapped potential.

Quiz time:

The block diagram has a drawing of the TX/RX coils and target, plus field lines. What is wrong with this drawing?

[waltr]

Quiz time:

The block diagram has a drawing of the TX/RX coils and target, plus field lines. What is wrong with this drawing?

The Target's magnetic field would be parallel to the TX coils field not perpendicular.

[Carl-NC]

The Target's magnetic field would be parallel to the TX coils field not perpendicular.

Ha ha Exactly! The target would be almost undetectable as drawn. It's maximum detectability would be between the coils and vary depending on depth.

[dbanner]

The Target's magnetic field would be parallel to the TX coils field not perpendicular.

Assuming you are looking at a 3d representation. In 2d it makes perfect sense. Just rotate the target lines of force by a factor of 90 degrees, Russian engineer do this in the head
Notice how the lines of force intersect the Rx coil, perpendicular, only to agree with laws of physics. We are looking at a 2d representation of a 3d occurrence.

[eclipse]

Guys these graphics are simple representation. When the artist gets his assignment he draws what he understood from the technical guys and in this case they perhaps decided a revision wont be needed as it wont be important for the end result. Thats all about russian electronics they look ugly, heavy and rough and do the right job most of the times.. are there any fine watches made in russia? Back to the topic im surprised such technology was used some 30+ years ago.

[kt315]

The Target's magnetic field would be parallel to the TX coils field not perpendicular.

coil 2 is RX. you are wrong. SORRY. sure perpendicular. IMB was projected NOT IDIOTICS in Siberia.

[filos]

I had such a device, and the RX coil was adjusted vertically and horizontally. and if I knew that the goal was buried in this field, then I went through several times, set the coil both horizontally and vertically and at different angles. Many times with perpendicular coils, the device saw better.

[eclipse]

I've obtained one of these Anker devices

[Jose]

Hi eclipse, I'm glad you have one of these detectors, when you can please let us know how it performs.

[eclipse]

Well I have /had 2 of those/ older one which is broken and the latest model.
The latest model I've tested and I wasn't really happy: 1) too slow movement 2) you can't rotate it freely - you need to reset it 3) seems to have been built for larger/massive objects

[Jose]

Thanks