джоник Magnetic Sensor

jonik is very sensitive to metal

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You can use it alone, as a magnetometer, you can hook it to a tripwire, you can use it to break the integrity of a cable, and you can use it for FPV too.

DESCRIPTION, MAIN FUNCTIONS, DEFINITIONS AND PARAMETERS

 

        The magnetic target sensor (hereinafter referred to as the device) is a device that responds to changes in the magnetic field when metal objects (vehicles, armored vehicles, weapons) approach it, as well as when moving in space.

   The device is triggered when metal objects approach it:

•       about 50-100 cm for a metal object weighing from 1 to 5 kg.

•       about 2 meters for a passenger car to pass

•       about 2.5-3 meters for a light armored vehicle to pass

•       about 4-5 meters for a heavy armored vehicle to pass

          The device is equipped with a self-destruct timer, after which it is also triggered.

          The device must be installed away from metal objects, electronics and magnets to avoid false alarms. The device must be in a static position.

          When triggered, the terminals of the electric detonator are closed to the battery power supply.

In the Device:

1.     The sensitive element is a magnetometer.

2.     The device is powered by a non-removable battery of the 18650 type.

3.     The controls and terminals for connecting the electric detonator and microcable are located outside the housing.

 

First, check the operation of the device without connecting the electric detonator.

1.     remove the plastic retainer;

2.     remove the power switch;

3.     remove the left plug (plug for power) and turn it 180) put it back;

4.     remove the right plug (plug for the tripwire) and turn it 180) put it back (in case of placing the breakaway target sensor on the tripwire);

5.     install the breakaway target sensor;

6.     Connect the contacts of the breakaway target sensor to the right terminal block (terminal block for the microcable);

7.     insert the plastic clamp located on the breakaway sensor into the hole of the right plug (plug for the tripwire) and fix it;

8.     attach the device to the controlled object (if necessary, use the ears for fixation and plastic clamps);

9.     Connect the electric detonator;

10. remove the left plug by the thread from a safe distance;

11. After removing the plug, the device will start and the light indicator will begin (the indicator will blink blue);

After 100 seconds, the light indicator on the device will turn off, which means that the device has become armed. Approaching the device with magnetic metal objects, as well as shifting from the original position, will lead to the initiation of the device.

The jonik is made on the TINY814 microcontroller, on the MMA8425 accelerometer chip and output stages on field-effect transistors (in sot8 type cases). The lever is a switch flag. When turned on, the first timer works for two minutes, then the board blinks another LED for a couple of minutes, after which it goes into combat mode. Photo of the board.