Flaw detector for magnetographic quality inspection

A flaw detector for magnetographic quality inspection, comprising:

• a readout unit having a drum with a cylindrical surface, which is adapted to rotate about a shaft thereof;
• a magnetosensitive transducer disposed on the cylindrical surface of said drum and comprising several reproducing magnetic heads arranged on said cylindrical surface of the drum so that they are displaced along the shaft thereof, each next reproducing magnetic head being spaced from the previous one at a distance equal to the length of a sensed line;
• a modulation disk having holes along the perimeter thereof and installed on the shaft of said drum;
• a sensor of cycles, installed in the immediate vicinity of said holes of said modulation disk;
• a mechanism for driving a magnetogram and said drum with the magnetosensitive transducer;
• a test data processing unit having:
• an amplifier whose input is connected to said magnetosensitive transducer;
• a display device having at least five inputs and three outputs, said first input being connected to an output of said amplifier, said input being connected to said sensor of cycles;
• a switch having one input connected to said sensor of cycles and another input connected to said amplifier, and having an output;
• a line videosignal generator having an input connected to said output of said switch, while the output thereof is connected to said third input of said display device;
• at least one recording magnetic head electrically connected to said amplifier;
• an interface connected to an output of said test data processing unit, and
• a computing device having at least three inputs and three outputs and connected to an output of said interface.

A flaw detector for magnetographic quality inspection, comprising:

• a readout unit having:
• a drum with a cylindrical surface, which is adapted to rotate about the shaft thereof;
• several reproducing magnetic heads arranged on the surface of said drum so that they are displaced along the shaft thereof, each next reproducing magnetic head being spaced from the previous one at a distance equal to the length of a sensed line;
• a modulation disk having holes along the perimeter thereof, which is installed on the shaft of said drum;
• sensor of cycles or lines, installed in the immediate vicinity of said holes in said modulation disk;
• a mechanism for driving a magnetogram and said drum with said reproducing magnetic heads;
• a test data processing unit having:
• an amplifier having several inputs and outputs whose number is equal to the number of reproducing heads to which they are connected;
• a switch connected to said outputs of said amplifier and to an output of said sensor of cycles or lines;
• a display device having at least five inputs and three outputs;
• said firs input connected to the output of said amplifier, said second input connected to said sensor of cycles and lines;
• a line video signal generator whose input is connected to said switch, while the output thereof is connected to said third input of said display device;
• an analog-digital converter having at least two inputs and an output, said first input connected to said switch, said second input connected to said first output of said display device;
• a buffer storage having at least two inputs and an output, one input connected to said output of the analog-digital converter;
• an address counter having at least two inputs and two outputs, said first input connected to said sensor of cycles or lines, said second input connected to said second output of said display device, said first output connected to the other said input of the buffer storage;
• an interface connected to the output of said test data processing unit, and comprising:
• a transmitter-receiver unit having at least two inputs and two outputs, said first input connected to said output of the buffer storage, said first output connected to said fourth input of said display device;
• an interrupt controller having at least two inputs and an output, one said input connected to said second output of the address counter;
• a controller of the direct access to a memory, having at least two inputs and two outputs;
• said first input connected to said third output of said display device;
• a computing device having at least three inputs and three outputs;
• said first input connected to said second output of said transmitter-receiver unit, said second input connected to said interrupt controller, said third input connected to said second output of said controller of the direct access to a memory of said computing device, said first output connected to said second input of the transmitter-receiver unit, said second output connected to said second input of the interrupt controller, and said third output connected to said second input of the direct access controller.