1. Introduction
The concept of a "digital home," serving as the fundamental unit of future intelligent community systems, has gained significant attention. It is built upon a home network that offers intelligent services across the entire household, encompassing data communication, home entertainment, and the control of information appliances. A critical aspect of designing a digital home involves implementing robust communication functions—both between the home and the outside world, as well as internally. Currently, external communication primarily relies on broadband Internet access, while internal communication leverages Bluetooth wireless technology, which is increasingly competitive.
Traditionally, digital homes have been controlled by PCs, which lack a human-centered approach. Inspired by the idea of artificial emotion, I designed an intelligent robot equipped with various external sensors, treating it as a family member and using it to manage the digital home. This robot not only provides assistance but also enhances the user experience by interacting naturally.
This paper focuses on the design of an intelligent robot for digital home healthcare, employing Bluetooth technology for communication between the robot and both medical devices and control PCs. The entire system is characterized by its low cost, comprehensive functionality, broad applicability, and significant market potential.
2. Overall Design of the Intelligent Robot
2.1 Multi-Sensor System for Intelligent Robots
One of the most crucial areas in robotic intelligence is the integration of multi-sensor systems, combining external sensors like vision, hearing, touch, and force with internal sensor information from each robot joint. This integration allows the robot to perform essential tasks such as real-time image transmission, speech recognition, scene analysis, positioning, obstacle avoidance, and target detection. Additionally, medical modules, including CCD cameras, stereo microphones, and image capture cards, along with specialized medical sensors and an expert medical system, enable healthcare and telemedicine monitoring. The block diagram of the multi-sensor system for the intelligent robot is illustrated in Figure 1.
2.2 Intelligent Robot Control System
The control system consists of two main parts: the upper computer, typically a PC, which handles trajectory planning, sensor information fusion algorithms, visual processing, human-machine interfaces, and remote processing; and the lower computer, which generally employs a microcontroller system or DSP to handle motor servo control, feedback processing, image processing, voice recognition, and communication interfaces.
Using a multi-chip system as the lower computer can divide tasks among processors, but this approach lacks sufficient signal processing capabilities. Given the need for signal processing, image processing, and speech recognition for this intelligent robot, DSP was chosen as the controller. The control system utilizes the DSP (TMS320C54x) as its core component, integrating Bluetooth wireless communication, GSM wireless communication (supporting GPRS), motor drives, a digital compass, sensory sensors (vision and hearing), medical sensors, and multi-select serial communication (RS-232) modules. The control system's block diagram is depicted in Figure 2.
(1) The system controls the robot's movement by driving motors and steering motors, using the digital compass's feedback for PID control.
(2) The Ericsson ROK101007 circuit serves as the Bluetooth wireless communication module, enabling communication between the robot and the host PC, as well as with other Bluetooth-enabled healthcare instruments.
(3) The GSM wireless communication module, supporting GPRS, facilitates data, voice, text messaging, and fax services, allowing communication with remote medical monitoring centers via mobile networks.
(4) Since the TMS320C54x has only one serial port, and the sensor modules of the Bluetooth, GSM, digital compass, and visual-auditory systems all use RS-232 asynchronous serial communication, a multi-select serial communication module was designed to handle conversions. When the TMS320C54x requires data from the Bluetooth module, it triggers a circuit strobe; when it needs data from a specific sensor module, it turns off the Bluetooth module's strobe and activates the desired sensor module's strobe. In this way, each module communicates serially with the TMS320C54x.
Overall, this design demonstrates innovation in robotics and healthcare technology, offering a promising solution for future digital homes.
This Bidirectional DC Power Supplies are featured for high reliability, efficient setting function and complete protections, also supporting the requirement of parallel connection of multiple-units to achieve output power rating expansion, making this bidirectional power supply the best choice for the cutting-edge application industry for automated testing, automotive production line manufacturing testing, photovoltaic plate aging testing and various DC power supplies.
This series of bidirectional DC power supplies adopt active power factor correction technology, which is specially designed for typical 380V and 480V AC two-phase or three-phase alternating current with the rated output power ranging 5KW / 10KW / 15KW, the maximum output voltage ranges from 80V to 2000V under different rated powers, and the bidirectional power can be flexibly adjusted. It can output a higher voltage at a lower current or a higher current at a low voltage while maintaining within the maximum rated power range.
Bidirectional DC Power Supplies
The BPS series of bidirectional programmable power supplies are high-precision, low-ripple and fast response speed bidirectional DC Power Supplies with an all-digital signal control loop designed by iDealTek-Electronics based on IGBT high-frequency switching technology and bidirectional AC/DC topology architecture.
Different from the traditional DC power supply which only has constant voltage and constant current working modes, this series of programmable bidirectional AC DC power supplies have both power supply and load characteristics. It has multiple working modes of constant voltage, constant current, constant resistance and constant power, and can realize dual quadrant operation to allow the energy of the measured object to be fed back to the power supply. And Bidirectional AC-DC Power Supplies have built-in function generator, can freely generate arbitrary waveforms.
This Bidirectional DC Power Supplies are featured for high reliability, efficient setting function and complete protections, also supporting the requirement of parallel connection of multiple-units to achieve output power rating expansion, making this bidirectional power supply the best choice for the cutting-edge application industry for automated testing, automotive production line manufacturing testing, photovoltaic plate aging testing and various DC power supplies.
This series of bidirectional DC power supplies adopt active power factor correction technology, which is specially designed for typical 380V and 480V AC two-phase or three-phase alternating current with the rated output power ranging 5KW / 10KW / 15KW, the maximum output voltage ranges from 80V to 2000V under different rated powers, and the bidirectional power can be flexibly adjusted. It can output a higher voltage at a lower current or a higher current at a low voltage while maintaining within the maximum rated power range.
Bidirectional DC Power Supplies, Bidirectional Power Supplies, Bidirectional AC-DC Power Supplies, Bidirectional AC DC Power Supplies, Bidirectional Programmable Power Supplies
Yangzhou IdealTek Electronics Co., Ltd. , https://www.idealtekpower.com