Healson Technology Co.,Ltd.
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Chapter 3 Basic Principles and Main Technical Indicators
3.1 Basic Principle
3.1.1 System Principle
The system includes image collecting(probe head) and image processing(exterior
intelligent terminals).
After receiving instruction issued by the intelligent terminal, the probe will form ultrasound
beams of different scanning modes. The beams are passed to the transducer (sound head) via
the transmitting circuit, the radiating receiving switch circuit, and the radiating receiving composite
circuit, and then the transducer will convert the electrical signals into mechanical wave and
transmit it to the scanned organ to form ultrasonic launch. When the transducer received
ultrasound, it realizes ultrasonic receiving (or collection) of the converted electrical signals via
the radiating receiving composite circuit, the radiating receiving switch circuit and
the
transmitting circuit. The collected electrical signals will be transmitted to the intelligent terminal via
the interface circuit after simple synthesis and storage processing.
3.1.2 System Composition Diagram
3.2 Main Technical Indicators
The performance of the probe shall be in accordance with Table.
Table 1 Requirements of ultrasound system
Performance indicator
Probe type and standard frequency
Standard frequency
. MHz
Probe frequency error
Deviation of the sound working frequency
from standard frequency shall≤±%
Probe type
convex
，
R≥mm
Scanning depth
，
mm
≥
