In conventional veterinary B-ultrasound image systems, video signals are generally directly connected to image acquisition cards with video cables. Many studies have found that the current veterinary B-ultrasound image workstations may affect the image quality of veterinary B-ultrasound itself, and even make veterinary B-ultrasound unable to work.

Through analysis, it is known that this phenomenon may be caused by the interference of computers on veterinary B-ultrasound. It is well known that the power supply system of computers uses high-frequency switching power supplies with an operating frequency of 50-200kHz, and is a method that generates many high-frequency harmonic components. Their frequency bands just fall within the working frequency band of veterinary B-ultrasound and are received by veterinary B-ultrasound probes, thereby severely distorting the B-ultrasound image and even making veterinary B-ultrasound unable to work.

Veterinary B-ultrasound

Through a large number of experiments, we have obtained a solution to this problem:

Use a dedicated power supply to replace the original computer switching power supply, and use the method of photoelectric isolation to isolate the connection between veterinary B-ultrasound and the computer. Add an electro-optical conversion at the video signal output end of veterinary B-ultrasound to convert the video electrical signal into a video optical signal; connect it to the photoelectric converter added in front of the computer through optical fiber. In this way, the electrical connection between the computer and the veterinary B-ultrasound is completely isolated, thus completely solving the problem of computer interference with veterinary B-ultrasound.

Veterinary B-ultrasound provides image source, preferably with S-terminal output (its clarity is about 100 lines higher than video output); the image acquisition card uses a professional acquisition card designed specifically for veterinary use, and the commonly used video acquisition card cannot meet the diagnostic requirements; the key to the computer is not the configuration level, but its reliability and compatibility.

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