Array Signal Processing

Achieving Continuous and Stable Monitoring Inside the Body: Breakthroughs and Prospects of New Biochemical Sensors

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Achieving Continuous and Stable Monitoring Inside the Body: Breakthroughs and Prospects of New Biochemical Sensors

In the fields of biomedical research and clinical applications, real-time monitoring of biochemical indicators within the body is crucial. Whether it is the dynamic monitoring of blood glucose levels in diabetic patients or tracking changes in neurotransmitters in patients with neurodegenerative diseases, biochemical sensors play a key role. However, for a long time, sensors have … Read more

How Do In-Car Cameras See the World?

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How Do In-Car Cameras See the World?

Welcome to follow the public account belowAbao1990, this public account focuses on autonomous driving and smart cockpits, providing you with automotive insights every day. We start with cars, but we are not limited to them. In the current context of intelligent driving sweeping the automotive industry, the term “camera” has become familiar to everyone. Many … Read more

Learning Behavior Evaluation of Sensor and Testing Technology at Anhui Open University

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Learning Behavior Evaluation of Sensor and Testing Technology at Anhui Open University

Key Reminder: If you cannot find the corresponding review answers, please contact customer service and cooperate with their requirements! For more reference answers, please follow the 【Xuehai Search Questions】 WeChat public account and send the questions to obtain answers. Free original questions: www.bnjyedu.com Free answers: www.bnjyedu.com For original questions with images or small papers, please … Read more

Classic Q&A on ADC/DAC Design

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Classic Q&A on ADC/DAC Design

This article is about classic Q&A on ADC/DAC design, covering common issues such as clock duty cycle, common mode voltage, gain error, differential phase error, intermodulation distortion, and more. 1. What is Small Signal Bandwidth (SSBW)?Small Signal Bandwidth (SSBW) refers to the frequency at which the output amplitude drops to a specified value compared to … Read more

Detailed Explanation of DSP Chips

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Source: Tiger Says Chip Original Author: Tiger Says Chip This article introduces the functional architecture, classification applications, challenges, and trends of DSP chips. Comparing DSPs to “math prodigies”: while ordinary CPUs (like MCUs) excel at multitasking scheduling (the “liberal arts students”), DSPs specialize in quickly solving complex formulas (the “science students”), achieving “mental calculation capabilities” … Read more

Development and Challenges of Industrial Phased Array Ultrasonic Testing and Monitoring Systems

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Development and Challenges of Industrial Phased Array Ultrasonic Testing and Monitoring Systems

In the early 21st century, phased array ultrasonic technology expanded from the field of medical imaging to industrial non-destructive testing (NDT), establishing its significant position. The industrial phased array ultrasonic testing (PAUT) system utilizes multiple independently controlled elements or channels to emit and receive ultrasonic signals. Compared to traditional single-channel systems, PAUT can more accurately … Read more

New Book Recommendation: Internet of Things Communication and Intelligent Sensing – Theory and Practice

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New Book Recommendation: Internet of Things Communication and Intelligent Sensing - Theory and Practice

“Internet of Things Communication and Sensing: Theory and Practice” ISBN: 9787302683834 Authors: Wang Jiliang, Tong Shuai Price: 69 Yuan Comprehensively introduces the fundamental principles and implementations of Internet of Things communication and sensing, closely aligned with the forefront of the field; Combining theory and practice, covering basic knowledge, specific cases, and implementation code, providing a … Read more

Digital-to-Analog and Analog-to-Digital Conversion in Microcontrollers

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Digital-to-Analog and Analog-to-Digital Conversion in Microcontrollers

The digital-to-analog (DAC) and analog-to-digital (ADC) conversion in microcontrollers is a key technology that connects digital systems with the analog world. 1. Basic Concepts 1. DAC (Digital-to-Analog Converter) Function: Converts digital signals into analog signals (such as voltage or current). Application Scenarios: Driving motors, audio output, LED dimming, etc. Implementation Methods: Weighted resistor networks, R-2R … Read more

Application of PLC High-Speed Counters: Achieving an Accuracy Error Rate of 0.1%!

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Application of PLC High-Speed Counters: Achieving an Accuracy Error Rate of 0.1%!

“PLC High-Speed Counters: The Black Technology That Makes Equipment’s ‘Heartbeat’ Accurate to 0.1%!” 1️⃣ Single-phase Counter: The ‘Lone Ranger’ Expertise: A single signal line can handle simple counting scenarios. Pitfall: Weak anti-interference ability, prone to ‘going crazy’ under electromagnetic interference. 2️⃣ Dual-phase Counter: The ‘Dual Swordsman’ Expertise: Two signal lines distinguish forward and reverse rotation, … Read more

Challenges in PLC Programming: Understanding Positive and Negative Edges

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Challenges in PLC Programming: Understanding Positive and Negative Edges

In PLC programming, the positive edge and negative edge are key signal characteristics that trigger logical operations. They are commonly used to avoid signal jitter, achieve precise counting, or control execution order. If not mastered, their usage may lead to program logic confusion, false triggering, or functional failure. The following analysis covers principles, application scenarios, … Read more