The Engine Control Unit (ECU) is installed in the vehicle. To ensure the ECU operates reliably and normally, the installation and usage requirements for the ECU are as follows: 1. ECU Operating Environment Temperature Requirements Operating temperature range: -40℃ to +105℃; 1) If the temperature exceeds this range, cooling measures should be implemented. Ensure the … Read more
PCB grounding is a concern for PCB layout engineers, such as how to effectively plan a grounding system on the board, whether to wire analog, digital, and power grounds separately or together at a single point, and how to eliminate ground loops on the circuit board. Today, we will mainly discuss PCB grounding design, PCB … Read more
Electromagnetic compatibility refers to the ability of a device or system to function properly in its electromagnetic environment without causing unacceptable electromagnetic interference to anything in that environment. The purpose of electromagnetic compatibility design is to ensure that electronic devices can suppress various external interferences, allowing them to operate normally in specific electromagnetic environments, while … Read more
Search on WeChat Jicheng Training Practical tips for daily applications of PLCs, hoping to assist everyone in their daily use of PLCs. 1 Grounding Issues The grounding requirements for PLC systems are quite strict, and it is best to have an independent dedicated grounding system. Also, ensure that other devices related to the PLC are … Read more
In RS485 communication systems, the choice of grounding method is crucial, directly affecting the system’s stability and anti-interference capability. Therefore, engineers need to choose the grounding method reasonably based on project requirements. Below we will discuss which grounding is suitable for the RS485 bus. 1. Single Point Reliable Grounding There can only be one grounding … Read more
In the design, application, and selection process of fire automatic alarm systems, most people pay attention to the appearance, sensitivity, stability, and intelligence level of fire detectors, as well as the performance, interface, and functionality of the main unit… However, during actual engineering construction, there are some seemingly simple yet crucial aspects that require our … Read more
In the design, application, and selection process of fire automatic alarm systems, we often pay attention to the appearance, sensitivity, stability, and intelligence level of fire detectors, as well as the performance, interface, and functions of the control panel. However, during actual engineering construction, there are some seemingly simple issues that deserve our close attention. … Read more
In the field environment of Profibus, we use a variety of systems, and the devices we face interference from are diverse, so the sources of interference are also varied. Many failures caused by interference are more difficult to troubleshoot than other faults. Before troubleshooting interference failures, we need to understand the types of interference. In … Read more
In the field environment of Profibus, the systems we use are diverse, and the devices we are interfered with are varied, so the sources of interference are also peculiar. Many failures caused by interference are more difficult to troubleshoot than other failures. Before eliminating interference faults, we need to understand the types of interference. To … Read more
Basic Principles of Data Transmission Technology 1. Characteristic Impedance and Delay Characteristics Ideally, due to the in-phase relationship between the voltage and current of the resistive components, the input signal experiences no phase shift when passing through the resistive network, only inherent attenuation. In practical circuits, since cables do not possess purely resistive characteristics but … Read more