Related Experiment Video
Updated: Jun 26, 2026
08:35
Interactive and Visualized Online Experimentation System for Engineering Education and Research
Published on: November 24, 2021
[Design of a controlling switch set based on RS-232]
Jian-hu He1, Qing-li Zhou, Hui Tian
1Affiliated Women's Hospital, School of Medicine, Zhejiang University, Hangzhou.
Summary
This study presents an RS-232 based controlling switch set for medical image workstations. This reliable, low-cost device enhances image capture capabilities beyond standard computer peripherals.
Area of Science:
- Computer Engineering
- Medical Imaging Technology
Context:
- Standard computer peripherals (keyboard, mouse) are insufficient for specialized medical imaging tasks.
- Medical image workstations require tailored input solutions for efficient image capture.
Purpose:
- To design and detail an RS-232 based controlling switch set.
- To provide a reliable and cost-effective alternative for medical image capture.
Summary:
- The paper describes the design, working principles, circuit, and assembly of an RS-232 controlling switch set.
- Includes details of the associated software controller for seamless integration.
- The system is designed for easy manufacturing and high reliability.
Impact:
- Enables enhanced image capture functionality in medical settings.
- Offers a practical and economical solution for specialized input needs.
- Improves the usability of medical image workstations.
Related Concept Videos
01:24PI Controller: Design
Proportional Integral (PI) controllers are a fundamental component in modern control systems, widely used to enhance performance and mitigate steady-state errors. They are particularly effective in applications such as automatic brightness adjustment on smartphones, where they excel at mitigating steady-state errors for step-function inputs. Unlike PD controllers, which require time-varying errors to function optimally, PI controllers leverage their integral component to address residual...
01:23Design Example
The innovation of touch-tone telephony revolutionized the telecommunications industry by replacing the traditional rotary dial with a dual-tone multi-frequency (DTMF) signaling system. This system uses a matrix-style keypad with buttons arranged in four rows and three columns, creating 12 distinct signals each assigned to a pair of frequencies. Each button press results in a simultaneous generation of two sinusoidal tones – one from a low-frequency group (697 to 941 Hz) and one from a...
01:22Controller Configurations
Controller configurations are crucial in a car's cruise control system because they manage speed over time to maintain a consistent pace regardless of road conditions, thereby meeting design goals. In traditional control systems, fixed-configuration design involves predetermined controller placement. System performance modifications are known as compensation.
Control-system compensation involves various configurations, most commonly series or cascade compensation, in which the controller aligns...
Control-system compensation involves various configurations, most commonly series or cascade compensation, in which the controller aligns...
01:22Switching of BJT
Switching behavior in Bipolar Junction Transistors (BJTs) is a fundamental aspect utilized in various electronic circuits, particularly for digital logic applications like switches and amplifiers. In a typical switching circuit, a BJT alternates between cut-off and saturation modes, corresponding to the "off" and "on" states, respectively, thus behaving like an ideal switch.
Cut-off Mode ("Off" State): In this state, both the emitter-base and collector-base junctions are reverse-biased. The...
Cut-off Mode ("Off" State): In this state, both the emitter-base and collector-base junctions are reverse-biased. The...
01:20Differential Relays
Differential relays are used to protect generators, buses, and transformers by comparing electrical quantities at different points. When a fault occurs, the difference in current between the two points triggers the relay to operate, opening the circuit breaker. Under normal conditions, the current entering (i1) and leaving (i2) a generator are equal. When a fault occurs, however, these currents become unequal, and the difference current flows in the relay operating coil, causing the relay to...
01:25Directional Relays
Directional relays, essential for managing unidirectional fault currents, enhance the safety and efficiency of power systems. On power lines equipped with directional relays, faults downstream (to the right) of the current transformer typically cause the fault current to lag the bus voltage by approximately 90 degrees, known as the forward direction. In contrast, upstream (left-side) faults may result in the fault current leading the bus voltage by nearly 90 degrees, termed the reverse...