Key control system of Doppler ultrasonic diagnosis instrument

Abstract

The invention relates to a key control system of a Doppler ultrasonic diagnosis instrument. The key control system is connected with a color ultrasonograph host computer, and comprises a single-chip computer control module, a key module, a TGC (time grain compensation) module, a light-emitting diode (LED) display module and a sound generating module. The key control system has the characteristics that: an LED intelligent display chip is used for controlling the display of a backlight lamp, therefore the overall brightness adjustment of the backlight lamp can be realized and on / off of each LED can be controlled separately; single-chip computer control is adopted to achieve the synchronization technology of the state indication lamp in the key and the host computer state, and working mode and adjusting mode indication lamps are used to achieve better human-computer interaction; and by adopting PS / 2 interface to connect with a computer, the external connection of other keys are avoided in the setting process of basic input output system (BIOS), and the installation and maintenance become more convenient and rapider.

Description

technical field [0001] The invention relates to the field of keyboard design, in particular to a keyboard control system for a Doppler ultrasonic diagnostic instrument. Background technique [0002] Full digital color Doppler ultrasonic diagnostic instrument (referred to as full digital color Doppler ultrasound) is usually an ultrasonic diagnostic system based on a computer platform, which consists of an ultrasonic part and a computer part. Different from standard PC keyboards, color Doppler ultrasound keyboards need to be integrated with the host computer, and have background light to operate in a dark room. In addition, there are functions such as TGC (Time Gain Compensation, Time Gain Compensation) adjustment, and Encoders (encoder) adjustment. . In response to this demand, there are currently two types of design schemes: 1. Using RS232 interface; 2. Using RS232 interface + USB hub. Patent document CN200910108481.7 proposes an integrated color ultrasound control panel a...

AI Technical Summary

Problems solved by technology

[0003] 1. The RS232 interface is replaced by the USB interface. Now most PC motherboards or industrial control boards no longer provide external serial ports, and even some motherboards no longer have serial ports;

[0004] 2. If the PC part needs to set the BIOS (basic input and output system), a standard keyboard must be connected externally, which brings difficulties to equipment maintenance

[0010] 1. The existing color ultrasound keyboard with RS232 interface cannot enter the BIOS setting when the PC host starts;

[0011] 2. The existing RS232+USB interface color Doppler ultrasound control panel has the disadvantages of complex circuit and additional driver design;

[0012] 3. The existing technology cannot individually control the backlight under each button

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