General Introduction
The B-mode ultrasonography has been widely used for its advantages of low-cost, easy-operation and high-sensitivity. But the traditional diagnostic system of B-scan cannot meet the need of modern diagnosis because of the shortcomings of the unit. In order to make up for the defects and improve the diagnostic quality, NORCO dedicated a motherboard EMB-4850 to the system.

System Operating Theory
The B-mode ultrasonic graphic diagnosis system mainly consists of controlling circuit, emitter circuit, receiving circuit, scanner, display and transducer.
The controlling circuit, which in fact is a synchronizing generator, produces pulse signals synchronically and periodically to close the scanning and emitter circuit. On being triggered by signals, the emitter produces pulse of high frequency to stimulate the transducer.
In the B-mode ultrasonic graphic diagnosis system, the receiving circuit is responsible for receiving ultrasonic signals reflected from diagnosed organism. After that, the transducer turns the echoed signals into high-frequency ones for processing. On the other hand, the scanner produces scanning voltage to control the electron beam and finally present the images on the display.

Block Diagram

 

Solution
The EMB-4850, which is an embedded motherboard developed by NORCO, has the advantages of mini size, low dissipation, high stability and diverse serial ports and could meet the need of high standard of data collection, analysis, storage and display.

Feature
*Intel® Core™2 Duo/Core™ Duo/ Core™ solo/Celeron® with FSB 533/667MHz
*2x 200-Pin dual channel SO-DIMM, support DDRII 400/533/667MHz, capacity up to 4GB
*18 -bit dual channel LVDS/TV-OUTI/CRT Display output
*TV-OUT+LVDS,VGA+LVDS support dual independent display
*2x10/100/1000Mbps Ethernet
*HD Audio 7.1 CH
*1x MiniIDE/2x SATA/4x USB2.0/1x LPT /2x COM /1x PC104+

Interface Chart

 

Advantage
Excellent Performance: Based on Core 2 Duo processor, the EMB-4850 could process various data stably and efficiently. 
Convenient Expansion: As the EMB-4850 has diver interfaces including 2x SATA, 4x USB2.0, 1x LPT, 2x COM, 1x PC104+, it could be connected with various application devices.
Low Power Dissipation: The unique design of EMB’s cooling system could reduce the noise to the maximum and avoid system breakdown for operating heat. Meanwhile, because of its low power dissipation, it’s an environment-friendly product.
Practical Display: Its integrated display controller could clearly show diagnosis images. Meanwhile, it could support VGA+LVDS?TV-OUT +LVDS.

Evaluation
The EMB-4850 together with the EMB motherboard series developed by NORCO, could efficiently promote the intelligent, professional and environment-friendly development of medical appliance. It could be applied to diverse medical appliances such as monitor, therapeutic instrument, analysis device and motional diagnosis system (on ambulance) and perform excellently.