What Is an Acceleration Logger?
An Acceleration Logger is a device or system that records and measures the acceleration of an object or device.
It is a device that combines an acceleration sensor and a data logging function to measure and record acceleration. The latest products are capable of measuring acceleration up to 400G, and are now mostly compact and lightweight.
This makes it possible to measure the acceleration of rotating objects, the human body, and small animals, which have been difficult to measure in the past. In addition, they support high-speed sampling and are equipped with a large-capacity memory, which broadens the range of measurement.
Applications of Acceleration Loggers
Acceleration Loggers are used in a wide range of industries because of their compact size and ability to measure a wide range of frequencies. They are used to measure vibration in automobiles, logistics, transportation, equipment, sports, and other applications.
Most of them are small and consist of a sensor and a logger in one unit, enabling measurement in places where it has been impossible to install them in the past. They are used for product evaluation tests such as drop tests and shock tests, and for detecting head, hand, and foot movements of the human body.
Taking advantage of Acceleration Logger, it is possible to measure objects that could not be measured with conventional sensors and loggers.
Principle of Acceleration Loggers
Acceleration Loggers are mainly composed of an acceleration sensor, flash memory, CPU, and battery, although each manufacturer is different. Acceleration sensors are mostly 3-axis type sensors, and a single Acceleration Logger can measure acceleration in 3 axes at one time. Furthermore, the measurement range can be up to 400G, making it suitable for drop tests and shock tests.
In addition, recent Acceleration Loggers are lightweight and do not affect changes to the natural frequency of the object being measured. Their small size also makes it possible to measure the motion, tilt, and vibration of people and small animals. By connecting the main body of Acceleration Logger to a PC with a USB cable, it is possible to supply an external power source, monitor acceleration in real time, set various measurement conditions, and download recorded data.
Each electronic component of Acceleration Logger is in standby mode until a command to measure is received, and data is recorded in flash memory. Therefore, data is not lost even if the power is turned off.
How to Select Acceleration Logger
1. Purpose and Measurement Range
It is necessary to consider the purpose of using Acceleration Logger and the range you wish to measure. Acceleration Loggers are used in a variety of applications, and the specifications required will vary depending on the type of acceleration to be measured. First, clarify the intended use, such as in what situations, places, and time periods.
2. Measurement Accuracy
Accuracy of Acceleration Logger is an important factor. If you need particularly high precision measurement, you need to choose a product that can measure more precisely; narrowing the range from 400G to 200G, for example, can reduce the cost.
3. Data Recording Capacity
The amount of data a logger can record is also important. If you are taking measurements for long periods of time or need to record data frequently, it is important to select a product capable of recording large amounts of data.
4. Battery Life
The battery life of a logger should be selected based on the measurement period. If the measurement period is long or the logger is to be used outdoors, a battery that can operate for a long time is necessary. Longer life is not necessarily better, but the cost will be higher, so it is best to select the optimum duration for the application.
5. Operability and Data Acquisition Method
Check to see if the Acceleration Logger is easy to use. The method of data acquisition, such as USB connection or wireless communication, is also important. Depending on the application, there may be cases where it is handled by you alone, or by several people, or by workers who are not familiar with it. Consider how the product will be used and select a product that is easy to operate according to the user level.
6. Durability and Water Resistance
Acceleration Loggers are often used in the field, so choosing a product that is durable and waterproof will ensure long use. Even if the battery is preserved, damage to the device itself or flooding can render it unusable, so it is necessary to be clear about where the logger will be used.