In the increasingly modernized society, the application of computers and networks has penetrated into daily life. The electronic products of various embedded systems are also everywhere. After the application of computers passes the unprecedented PC system, the embedded systems The application is in full swing, and it has entered the fields of industry, military, communications, environmental protection, electric power, railway, finance and so on. As one of the two types of computers, the special computer system, that is, the embedded system, has far surpassed the traditional general computer system in terms of the number of applications. The emergence of embedded microcontroller technology has brought a new technological revolution to the field of modern industrial control. .
The system consisting of embedded microcontrollers can be embedded in any device that needs to be controlled, and has been widely used in the field of industrial control. Embedded systems can be divided into device level (IPC), board level (single board, module), and chip level (MCU, SoC). The currently used MCU and IPC are typical embedded system applications. With the rapid development of the Internet, the network function requirements for various industrial control devices are also getting higher and higher. A large number of intelligent devices will transmit information and data to each other through the network, realizing the functional autonomy of intelligent field devices, the highly decentralized system structure, and the integration of supervision and control.
Today, in the increasingly fierce market competition of embedded systems, how to quickly put products that meet the needs into the market and maintain a place in the competition has become a common problem faced by many embedded R&D and manufacturing companies.
Therefore, it is necessary to speed up the design process to improve the quality of design. At present, the solution adopted by most companies is to use the ready-made commercial platform. Embedded devices In the development process, in addition to its processor architecture, operating system performance, and other components must be considered, developers must also understand some parts of the system need to design, which parts need to buy off-the-shelf equipment, etc. .
The general self-designed solution has the advantage of being able to fully customize the final solution and optimize costs, but any design specification changes or omissions can be costly and prolonged. Conversely, using a commercial off-the-shelf platform will increase the cost of selling the product, or it may waste unnecessary costs, but in general, off-the-shelf systems provide faster verification cycles and thus a faster design process. To ensure the quality of the design in a shorter time to market.
Below we will use two solutions for developing embedded systems - designing or using off-the-shelf platforms for comparison and discussing the technical and economic risks associated with the two solutions.
Before development, you need to choose a processor technology for the core control part of the system. At present, EVOC uses the following five technologies:
1. Microcontrollers - Microcontrollers are extremely inexpensive and typically provide an integrated solution on a single chip, including I/O peripherals. They typically have very small on-chip memory capacity and are difficult to use in applications where complexity is high and where expansion is required. In addition, its clock rate is usually on the order of 10 MHz, so high performance control loops are generally not achieved.
2. Embedded Processor - Compared to microcontrollers, embedded processors have higher clock rates and often have external storage interfaces, so performance and scalability are not a problem. But applications require complex driver development because embedded processors typically do not have on-chip analog peripherals. In addition, with the development of chip packaging technology, embedded processors usually use high-density packaging technology, such as ball-grid array (BGA), which will lead to more complicated manufacturing processes, adding more Difficult hardware debugging work.
3. Digital Signal Processor (DSP) - A DSP is a dedicated microprocessor that provides additional instructions to optimize specific mathematical functions, such as multiply and accumulate operations. DSP is extremely useful for computing heavy-duty applications, but often requires specialized knowledge to take advantage of its software capabilities.
4. The Application Specific Integrated Circuit (ASIC)-ASIC chip is designed for a specific application and is not versatile. ASIC is widely considered to be an excellent solution for solving problems such as power consumption and product cost. However, extremely expensive ASIC development and manufacturing processes are often prohibitive and are generally limited to products with significant throughput.
5. Field Programmable Gate Array (FPGA) - FPGA provides an excellent balance between custom ASIC design and off-the-shelf technology. They have a high degree of proprietary performance and can be reconfigured logically by programming, so their development costs are much lower compared to ASICs. Although FPGAs can be used in a variety of applications, complex FPGA designs are generally uncommon because the VHDL programming format is unfamiliar to most embedded software developers accustomed to sequential programming in C.
In many cases, a single processor technology is not enough to address the needs of the application, so hybrid architecture is gradually becoming the direction of development. As shown in Figure 1, the embedded processor is used for system management, user interface, and data analysis, while the DSP is responsible for tasks such as I/O modules and preliminary processing of data. This hybrid architecture has become very common in embedded system design.
Figure 1: The embedded processor is used for system management, user interface, and data analysis, while the DSP or FPGA is responsible for tasks such as I/O modules and preliminary processing of data.
Travel Charger Adapter is convenience for these people who always travel in many countries. Desktop Power Adapter have normal DC connector for your need, and wall power adapter have mutil plug, like US/UK/AU/EU etc. We also can produce the item according to your specific requirement. The material of this product is PC+ABS. All condition of our product is 100% brand new.
Our products built with input/output overvoltage protection, input/output overcurrent protection, over temperature protection, over power protection and short circuit protection. You can send more details of this product, so that we can offer best service to you!
Travel Charger Adapter,Portable Travel Charger Adapter,Mini Travel Charger Adapter,Travel Charger Supply
Shenzhen Waweis Technology Co., Ltd. , https://www.waweisasdapter.com