Design of control module circuit Circuit principle:The control module circuit is shown in Figure 7. K1, K2, K3, K4, each button can send different address control commands through the pre setting of the chip. For example, when K1 is set to trigger, the chip sends B1 on command to the power line, and when K1 […]
Category: Circuit Diagram
Reveal the design of Ethernet signal conversion circuit for LPC2294 pump cabin
This paper presents a signal conversion circuit of pump cabin based on lc2294 processor, which realizes the acquisition and processing of three channels of 4-20 mA current signal, and converts 4-20 mA current signal into 0-1.6 MPa pressure signal. When the pressure signal exceeds the set threshold, the pressure overrun light alarm is given, and […]
Can bus and Ethernet embedded gateway circuit design strategy
This paper presents a method of interconnection between industrial fieldbus and Ethernet, and introduces the design and implementation of protocol conversion gateway between Ethernet and CAN fieldbus. AT89C55 is used as the main processor to realize the interconnection between CAN bus and Ethernet through two interface chips. The hardware structure and software design idea are […]
Design of communication circuit between MCU and Ethernet controller
At present, most of the temperature monitoring systems adopt RS 485 communication mode, which has the limitations of small monitoring range and complicated wiring. The embedded equipment based on MCU application system is small in size and low in cost. Combined with the characteristics of wide application and fast transmission speed of inter net, a […]
Interpretation of the circuit design scheme of co2128 Ethernet signal conversion system
Nowadays, the single signal form has no way to meet the needs of practical engineering. Network signal, USB bus signal, RS232 bus signal and can bus signal are widely used bus forms at present, but there are still problems in the exchange between them, which has been limited by the complex network protocol. However, the […]
Circuit design of high performance embedded industrial Ethernet monitoring system
The field intelligent monitoring device is the basis and key of building control network. The development of Ethernet field intelligent device based on high-end embedded technology is an important development trend. This paper proposes a monitoring system based on Embedded Industrial Ethernet technology, and describes the design process of hardware and software of Embedded Industrial […]
Circuit design of dm9000 Ethernet control platform
Based on the Ethernet circuit of dm9000, a simple TCP / IP server is realized by transplanting the simple TCP / IP protocol stack unip to the MCU. The simple TCP server is transformed, the Tibetan web pages are stored in the TCP server, the Internet is used to directly access the Tibetan TCP server, […]
Design guide of dual can bus and Ethernet monitoring circuit
At present, the most commonly used fieldbus is can bus, which has been widely used in intelligent communication network because of its high reliability, low cost, flexible application and many other advantages, but the limitation of transceiver driving ability is not suitable for long-distance data transmission and remote control. Ethernet technology is mature, communication speed […]
Circuit design of ultrasonic monitoring and early warning system based on ARM MCU
With the development of information, intelligence and network, embedded system technology has a broad space for development, and a great change is also taking place in the field of industrial control. The real-time embedded software and hardware technology based on 32-bit high-end processor will be applied in every corner of industrial control. Embedded controller has […]
Design of conversion circuit between Ethernet and serial interface
More and more devices need to access the network to realize remote control or resource sharing. The Ethernet interface is convenient for wiring and wide communication bandwidth, which can reach 100 MB / s or even 1000 MB / s. Embedded system is widely used in various electronic equipment and industrial test equipment because of […]