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1 Introduction
The multifunctional monitor is a commonly used clinical medical device. It can display the patient's electrocardiogram (ECG), respiration (RESP), blood oxygen saturation (SP...[Details]
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The circuit shown in the figure is a three-digit tachometer used to measure low frequency signals with a repetitive time interval of 0.235 to 15 seconds. The tachometer has a speed range of 4 to 255 r...[Details]
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As a branch of signal and information processing, digital signal processing has penetrated into various fields of scientific research, technological development, industrial production, national defens...[Details]
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Preface
Sleep apnea is a very common sleep breathing disease. According to research, about 24% of adult men and 9% of adult women, or more than 2 million people, suffer from this disease ...[Details]
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0Introduction
In oil drilling, accurate measurement of wellbore posture is the premise of wellbore trajectory control. To this end, this paper fully combines the advantages of single-chip ...[Details]
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0 Introduction
Today, with the rapid development of electronic technology and the emergence of new multifunctional electric energy meters, the choice of memory in the electric energy m...[Details]
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This article first briefly introduces the working principles of current mode and voltage mode and their respective advantages and disadvantages; then discusses the ideal voltage mode using output c...[Details]
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When using GPS for positioning, it will be affected by various factors. The factors that affect the accuracy of GPS positioning can be divided into the following four categories (see the figure be...[Details]
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Today's mobile phone production testing faces an increasingly complex environment, with challenges of multiple frequency bands and multiple standards, pressure on production test speed, and pres...[Details]
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Among the many candidate standards for China's mobile TV, the CMMB standard proposed by the Broadcasting Science Research Institute of the State Administration of Radio, Film and Television is aime...[Details]
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Power semiconductors and reactive components (capacitors and inductors) are ubiquitous in today's electrical equipment. In normal operation, they can cause two undesirable side effects on the AC line ...[Details]
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Abstract:
Using TMS320F2812 DSP chip as the control unit, without any gate control device control, the rich software resources of DSP 2812 are used to achieve equal precision measurement. A...[Details]
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The rapid growth of consumer video applications, from portable media players and cell phones to video game consoles, requires a multitude of different interfaces and adapters to enable users to tra...[Details]
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Fieldbus is an open, digital, multi-point communication control system local area network, and is one of the most promising technologies in today's automation field. CAN bus is a hot application in fi...[Details]
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Focus shift problem
Visible light and infrared light have different wavelengths, so the imaging focus is not on the same plane, which results in a clear image under visible light condition...[Details]