设计开发了一套用于家电电机堵转的智能化测试设备.按照家用和类似用途电器安全标准中对电机堵转试验的要求,提出了关键参数的设计方案,并对测试设备进行了结构及智能化、自动化设计.通过实际测试表明,使用该试验设备,可满足标准的试验要求,实现试验过程的智能化、自动化,提高检测的工作效率.

分析了常见的50Ω/50μH+5Ω和50Ω/5μH+1Ω两种不同V型人工电源网络的差异,对直流电能表分别使用这两种电源网络进行端子传导骚扰的测量,在典型频率点的测量结果进行了分析比较.对直流电能表的端子传导骚扰测量来讲,50Ω/50μH+5Ω网络可用作摸底性测试,而标准符合性测量结果必须以50Ω/5μH+1Ω网络为准.

家电产品在按照GB 4343.1进行端子骚扰电压的测量时,电源端口的测量使用人工电源网络进行即可,而对于互连线端口的测量则要使用电压探头进行,本文介绍了电压探头的工作原理,并以空调器产品互连线为例,介绍了互连线端口的骚扰电压测量过程以及测量数据的处理.

设计开发了一套用于检测电冰箱用异丁烷制冷剂泄漏安全性的智能化测试设备.按照电冰箱的安全标准GB 4706.13-2014《家用和类似用途电器的安全制冷器具、冰淇淋机和制冰机的特殊要求》中对可燃制冷剂模拟泄漏试验的要求,提出了关键参数的设计方案,并对测试设备进行了结构及自动化设计.测试表明,采用该试验设备,完全满足标准测试要求,实现了整个测试过程的自动化,提高了检测工作效率.

针对电能表电快速瞬变脉冲群抗扰度试验,给出一种用于电能表电快速瞬变脉冲群检测装置,设计了一种用于本装置的反馈干扰滤波网络,该网络对电能表电快速瞬变脉冲群抗扰度检验装置产生的反馈残压减少到电能表标准检定装置所能允许的范围之内,使得电能表电快速瞬变脉冲群抗扰度试验顺利进行.

The Instantaneous-storage water heater has become the choice of many people in the current market,some of these products may trigger a special hidden troubles in safety due to circuit design problem, this paper provides analysis of this problem ,and the structure of the Instantaneous-storage water heater. this will help manufacturers and safety inspection departments of household appliances.

By using SIEMENS CPU 224 CN as the core of the control,the motion control system for robotic picking and placing objects was designed.The system matched the design movement monitoring interface with the sub-control configuration king 6.53,the accurate positioning of the work piece can be done well,man-machine interface is friendly.It has a fault alarm and trajectory of the indicator function to meet the industrial needs of the industry.

In the design of smart meters,the most important problem is the electromagnetic compatibility EMC.This paper promotes solutions to the problems raised in the EMC test,advocates reasonable redundancy design and proposes a gradual increase in the reliability test.

Based on the core of MSP430 MCU,the smart switching power supply system with a gas alarm for industry was dsesigned to corrrespond to the national standard GB16808-2008 combustible gas alarm controller technology requirements and experimental methods.After analyzing and performing,the entire system was stable.The system was the output of DC 24 V 2 A industrial grade switching power.It has th function of friendly interface,with the failure of self-protection and alarm.It can meet the demand for industrial power well.

We often get different test results on the same EUT in different laboratories.This paper analyzes the possible reasons which can make different conclusions,and gives some suggestions on improving the reliability,reproducibility and comparabili- ty of test results in different laboratories.

Introducing a pulse count method in the Electric Fast Transients (EFT) immunity test of watt-hour meter,we provide the resistance-loading watt-hour meter with steady voltage by AC stabilized-voltage source,and count the pulse by a separate counter and timer. This method solves the problem,that we get a wrong result when we providing the resistance-loading watt-hour meter with steady voltage and current by verification device. Because the verification device can not work well under the disturb of EFT.