研究数据压缩对微控制器系统中数据传输所需的能源消耗的影响
Dominik Piątkowski1, Tobiasz Puślecki1, Krzysztof Walkowiak1
1Faculty of Information and Communication Technology, Wrocław University of Science and Technology, 50-370 Wrocław, Poland.
Sensors (Basel, Switzerland)
|January 11, 2024
概括
数据压缩可以在电池驱动的物联网 (IoT) 设备中显著节省能源. 选择正确的算法,比如传感器数据的LZ78或图像的JPEG,可以优化能源和传输效率.
科学领域:
- 嵌入式系统 嵌入式系统
- 无线通信无线通信
- 数据压缩数据压缩
背景情况:
- 物联网 (IoT) 设备的扩散需要高效的能源管理,因为它们是电池驱动的.
- 数据传输在资源有限的嵌入式系统中占能源消耗的很大一部分.
研究的目的:
- 调查数据压缩对电池驱动物联网设备数据传输能源消耗的影响.
- 评估各种压缩算法和传输模块,以提高能效.
主要方法:
- 基于微控制器的系统进行了全面的研究,资源有限.
- 性能分析包括了几种压缩算法的计算和内存复杂性.
- 测量了不同传输模块 (例如,nRF24L01+) 和数据类型 (传感器数据,图像数据) 的能源消耗.
主要成果:
- 仔细选择数据压缩算法可以在传输过程中节省大量的能量.
- 对于STM32F411CE微控制器上的传感器数据,nRF24L01+模块与LZ78算法相结合,提供最佳的能源和时间效率.
- 在图像数据传输中,JPEG压缩是最有效的.
结论:
- 将压缩算法定制为特定数据类型对于提高物联网设备的能源效率至关重要.
- 传输模块和压缩技术的选择对嵌入式系统的整体功耗产生重大影响.
相关概念视频
Conservation of AC Power
335
The principle of power preservation is applicable to both ac and dc circuits. This principle, when applied to AC power, asserts that the complex, real, and reactive powers produced by the source are equal to the total complex, real, and reactive powers absorbed by the loads. When two load impedances are connected in parallel to an ac source V, the complex power provided by the source can be calculated using the relation
335
Energy Stored in Inductors
389
An inductor is ingeniously crafted to accumulate energy within its magnetic field. This field is a direct result of the current that meanders through its coiled structure. When this current maintains a steady state, there is no detectable voltage across the inductor, prompting it to mimic the behavior of a short circuit when faced with direct current.
In terms of gauging the energy stored within an inductor, it is equivalent to the integral of the power delivered at every individual moment, all...
In terms of gauging the energy stored within an inductor, it is equivalent to the integral of the power delivered at every individual moment, all...
389
Energy Losses in Transformers
876
In an ideal transformer, it is assumed that there are no energy losses, and, hence, all the power at the primary winding is transferred to the secondary winding. However, in reality, the transformers always have some energy losses, and, hence, the output power obtained at the secondary winding is less than the input power at the primary winding due to energy losses.
There are four main reasons for energy losses in transformers.
The first cause can be the high resistance of the...
There are four main reasons for energy losses in transformers.
The first cause can be the high resistance of the...
876
Electrical Energy
1.2K
Using electric appliances for a longer period of time consumes more electrical energy and results in a higher electric bill. The energy produced by the transfer of electrons from one point to another is known as electrical energy. If power is delivered at a constant rate, the electrical energy can be defined as the product of power used by the device for a period of time. The energy unit on electric bills is the kilowatt-hour, where one kilowatt-hour is equivalent to 3.6 × 106 joules.
1.2K
Power Factor Correction
179
The power transmission to a factory involves the transfer of apparent power, a combination of active and reactive power. The power factor measures how effectively electrical power is converted into useful work output. The ratio of the real power (KW) that does the work to the apparent power (KVA) supplied to the circuit.
179
Efficiency of The Carnot Cycle
2.6K
The hypothetical Carnot cycle consists of an ideal gas subjected to two isothermal and two adiabatic processes. Since the internal energy of an ideal gas depends only on its temperature, which is the same before and after the completion of the Carnot cycle, there is no change in its internal energy. Hence, using the first law of thermodynamics, the total heat exchanged by the ideal gas equals the total work done. Thus, we can quantify the efficiency of the Carnot cycle via the heat exchanged...
2.6K


