Application of inductive sensor: 1. Inductive roller diameter sorting device
Inductive roller diameter sorting device in kind
Structural principle of inductive roller diameter sorting device
2. Variable air gap differential inductance pressure sensor
The variable air gap differential inductance pressure sensor is mainly composed of C- shaped spring tube, armature, iron core and coil.
Variable air gap differential inductance pressure sensor
3 Other applications
Inductive sensors can also be used in active measurement of grinding, measuring length displacement and making electronic micrometer.
4. Differential transformer type sensor
It can be directly used for displacement measurement, and can also measure any mechanical quantity related to displacement, such as force, torque, pressure, pressure difference, vibration, acceleration, strain, liquid level, etc.
Force and Moment Measurement
differential transformer type force sensor
Pressure measurement
1 Connector 2 Diaphragm 3 Base 4 Circuit board 5 Differential transformer 6 Armature 7 Housing
The transmitter can measure the pressure of (-5 × 105~6 × 105)N/m2 in stages, the output signal voltage is (0~50)mV, and the accuracy is 1.5.
acceleration sensor
The excitation frequency used to determine the frequency and amplitude of the vibrating object must be more than ten times the vibration frequency in order to obtain accurate measurement results. The measurable amplitude is (0.1~5)mm, and the vibration frequency is (0~150)Hz.
Application of Eddy Current Sensor
Eddy current sensor has the advantages of large measurement range, high sensitivity, simple structure, strong anti-interference ability and non-contact measurement. It is widely used in various fields of industrial production and scientific research.
induction cooker
Induction cooker is one of the necessary household appliances in our daily life. Eddy current sensor is one of its core devices. High frequency current passes through the excitation coil to generate alternating magnetic field. Countless eddy currents will be generated at the bottom of the iron pot, which will make the bottom of the pot heat itself and boil the food in the pot.
eddy current mine detector
eddy current proximity switch
It can detect whether there is an object approaching within a certain distance (several millimeters to tens of millimeters). When the object is close to the set distance, it can send out the "action" signal. The core part of the proximity switch is the "sense head", which has a high sense of the object being approached. This proximity switch can only detect metal.
It is one of the future development trends to improve the performance of inductive sensors by using the better performance of new materials. For example, the internal structure of the inductive proximity switch is a coil wound on a ferrite core as an inductance coil, and the limitation of the ferrite core itself makes it impossible for the inductive sensor to develop under the existing design concept, so it can only Find new materials to replace the ferrite coil, so as to produce a sensor with better performance.
Based on MEMS silicon micromachining technology, the inductive sensor has the characteristics of small size and low power consumption, and is easy to integrate in various analog and digital circuits, which is convenient for application in various fields. This is also one of the main development directions of all sensors.
Another major feature of the development of inductive sensors is the development of integration and intelligence. The integrated sensor has obvious advantages. It integrates the components in the auxiliary circuit and the sensing element on a chip at the same time, so that it has the functions of calibration, compensation, self-diagnosis and network communication. It can reduce costs and increase production.