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How are Data Loggers Powered?

一种数据记录仪is a compact, self-contained electronic unit that measures, records, and transmits a stream of data. In other articles, we’ve covered thetypes of data他们用于收集,包括温度,湿度,压力和许多其他。

We’ve also previously discussed theindustriesthey’re commonly used in, including pharmaceuticals, perishable food distribution, aerospace, water treatment, and others. Data loggers are especially valuable in applications where product quality is sensitive to environmental conditions, or to the operating parameters of a manufacturing process.



How are data loggers powered?

The small amount of power that a data logger requires can come from a number of different sources:

Wired AC Connection
When the main building power is accessible, data loggers can use an AC adapter plugged into a normal wall outlet. A variety of options exist, usually for 100-240 VAC supplies, withfittings可用于非美国标准网点。用于数据记录器的AC适配器通常将电源AC电压降低到记录器所需的较低DC电压。在停电的情况下,这些单元可以包括可充电电池备份。






对于无需访问无线或有线网络连接的数据记录器,可以临时存储在记录器中的数据,然后手动下载到笔记本电脑或卫星收集设备USB连接。记录器中的存储空间有限,因此重要规范是可以存储多少数据,通常以条件给出data points。To figure out how much time the logger can run without exceeding its storage capacity, you’ll need to do a calculation that also takes into account the measurement interval:

  • 最大存储时间=(数据点容量)✕(测量间隔)

For example, a logger with a capacity of 400,000 points, collecting data every 10 seconds, can run for about 46 days without exceeding its memory.

This approach is growing in popularity, since it uses largely existing infrastructure to significantly enhance the capabilities of the logger.启用Wi-Fi数据记录器能够将数据连续传输到基于云的监视工具,从而消除了对周期性下载的需求并提供对来自任何地方的监视数据的实时访问。

wi - fi的另一个主要优点是,它是反时针erently scalable. New monitoring points can be added to an existing network easily, and the data from these loggers is visualized, organized, and archived automatically with online monitoring tools (we’ll talk more about that in the next section).


This is a low-power, long-range wireless communication protocol that’s well suited for data loggers. In a LoRa network, individual data loggers are set up to transmit to a central gateway device, which can then upload data to a local network, or to the cloud.

For data loggers, LoRa has the advantage of long range communication relative to Wi-Fi, but requires the use of a gateway device to connect to cloud based monitoring.

一种启用了蓝牙数据记录仪can operate in a couple of different modes. One mode is similar to a USB logger, where the data is stored locally, then periodically transferred via Bluetooth. An example is a temperature data logger that is embedded in a refrigerated package during shipment. When it arrives at the customer site, the temperature history in the logger is downloaded via Bluetooth, giving the customer a full record of temperature during the trip. (A data logger enabled withNFC,近场通信,也以这种方式工作。)





更复杂监控系统use online software tools that integrate seamlessly with data logger hardware. This is a powerful approach that can be used to collect and visualize data that is continuously transmitted by any number of Wi-Fi or ethernet enabled loggers in the field, organizing it by time, location, data type, or other user-selected parameters. Data logger software can also provide dashboards that quickly summarize the most critical data for large monitoring networks, including the status of any custom alarm limits.


One final note on data collection- for FDA-regulated industries, it’s important to confirm that your data collection hardware and software is compliant with21 CFR Part 11,这是涵盖电子记录的联邦监管。