The industrial computer is a reinforced and enhanced industrial computer. The uses of the industrial computer in the industrial field include data acquisition, analysis, storage, monitoring, and control. The industrial computer has important computer attributes and characteristics. Its main components are industrial chassis, passive backplane and various boards that can be inserted into it, such as CPU card, I/O card, etc., and have an operating system, control networks and protocols. More stable than ordinary computers, industrial computers have stable operation in dust, smoke, high/low temperature, humidity, vibration, electromagnetic, and corrosive environments, as well as rapid diagnosis and maintainability, and their working hours are 24-hour uninterrupted operation.
Real-time, the industrial computer performs real-time online detection and control of the industrial production process, responds quickly to changes in working conditions, and performs acquisition and output adjustment in time (the watchdog function is not available in ordinary PCs), self-reset in distress, Ensure the normal operation of the system.
Expansion, because the industrial computer adopts the baseboard + CPU card structure, it has a strong input and output function, and can expand up to 20 boards, which can be connected with various peripherals and boards in the industrial field, such as with the road controller, video monitoring Systems, vehicle detectors, etc. are connected to complete various tasks.
Compatibility, can use ISA and PCI and PICMG at the same time, and supports various operating systems, multi-language assembly, multi-tasking operating systems.
PLC is a digital electronic device, programmable controller. It uses programmable memory to store instructions, can complete functions such as logic, sequence, timing, counting and arithmetic operations, and control various mechanical or production processes through digital or similar input/output modules, such as analog quantities. Input and output, servo control, host computer communication, etc.
The development trend of programmable logic controllers: small PLCs are developing in the direction of smaller size, enhanced functions, and faster speed, so that they can more widely replace relay control. Large and medium-sized PLCs are developing in the direction of large capacity, high reliability, high speed, multi-function, and networking, enabling them to perform comprehensive automatic control of large-scale and complex systems.
Features: high reliability, strong anti-interference ability, simple programming, convenient use, easy design and installation, less maintenance workload, complete functions, strong versatility, small size, and low energy consumption.
A single-chip microcomputer is an integrated circuit chip, which is the main component of an embedded control system. It is a central processor CPU that uses VLSI technology and has the ability to process data; random access memory RAM, read-only memory ROM, various I /O port and Sino-Singapore system timer/counter and other functions (may also include display drive circuit, pulse width modulation circuit, analog multiplexer, A/D converter and other circuits) are integrated into a small but perfect silicon chip. The microcomputer system is widely used in the field of industrial control. From the 1980s, it developed from the 4-bit and 8-bit single-chip microcomputer at that time to the current 300M high-speed single-chip microcomputer.
Features: The size of the single-chip microcomputer is relatively small, and the internal chip is used as a computer system. Its structure is simple, but its functions are complete. It is very convenient to use and can be modularized and applied. Generally, assembly language or C language is used for programming, which has a high degree of integration and strong reliability. Even if the single-chip microcomputer works for a long time, there will be no problem of failure. It is applied in various ring culture, and it has strong control ability.
The above is a brief description of industrial computer, PLC, and single-chip microcomputer. Industrial computer is an industrial control computer, PLC is a programmable controller, and single-chip microcomputer is the main component of an embedded control system. The core of the system, the control machine is mainly the central control host used to control the operation of multiple modules in production.