With the continuous development of science and technology, force sensors, as an important sensor type, have been widely used in industrial automation, intelligent manufacturing, robotics and other fields. In order to ensure the accuracy and reliability of the force sensor, it is particularly important to develop a set of scientific and standardized verification procedures. This article will introduce the relevant content of JJG391-2009 force sensor verification regulations to help readers better understand and apply this regulations.
First, the basic principle of the force sensor.
A force transducer is a device capable of converting a force into an electrical signal, and its operating principle is mainly based on the principles of strain gauges and piezoresistive effects. When a force transducer is subjected to an external force, the strain gauges inside it are deformed, thus changing its resistance value. By measuring this change in resistance value, the magnitude of the force acting on the sensor can be calculated.
Second, the necessity of force sensor verification procedures.
With the wide application of force sensors in various fields, their accuracy and reliability have an increasing impact on production and life. In order to ensure the normal use and measurement accuracy of force transducers, it is particularly important to formulate a set of scientific and standardized verification procedures. Through the verification procedures, the performance indicators of the force sensor can be comprehensively and accurately evaluated, and the existing problems can be found and solved in time, so as to improve the reliability and service life of the sensor.
3. The main content of JJG391-2009 force sensor verification regulations.
JJG391-2009 force sensor verification regulations stipulate the verification methods, technical requirements, test methods and acceptance rules of force sensors. Here are the main elements of the protocol:
1.Verification method: The verification method of the force transducer is specified in the regulations, including the direct comparison method and the substitution method. The direct comparison method is to make a direct comparison of the force transducer to a standard weight, while the alternative method calculates the error of the force transducer by comparing the difference between the gravitational acceleration of the known mass and the unknown mass.
2.Technical requirements: The technical requirements of the force sensor are specified in the regulations, including measurement range, sensitivity, linearity, repeatability, hysteresis and other indicators. These indicators are an important basis for evaluating the performance of a force transducer and must comply with relevant regulations in order to be judged as a qualified product.
3.Test method: The test method of the force transducer is specified in detail in the regulations, including static test and dynamic test. Static testing involves applying a static load to a force transducer at constant temperature and humidity and recording its output values. The dynamic test is to dynamically excite the force sensor through equipment such as a shaking table and analyze its response characteristics.
4.Acceptance rules: The acceptance rules for force transducers are specified in the regulations, including visual inspection, dimensional measurement, performance testing and environmental suitability testing. Only force transducers that pass these tests can be judged to be acceptable.
Fourth, summary and outlook.
The formulation and implementation of JJG391-2009 force sensor verification regulations provide a scientific and standardized technical basis for ensuring the accuracy and reliability of force sensors. In the future, with the continuous development of science and technology and the expansion of application fields, the requirements for the performance of force sensors will continue to increase, and the corresponding verification procedures will also need to be continuously improved and updated. At the same time, with the continuous development of intelligent and automation technology, the application scenarios of force sensors will be more extensive and complex, and it is necessary to strengthen the research and development and application research of new force sensors to adapt to the changing market demand and technological development.