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Integrated Circuits Piezoelectric-A Detailed Overview

Adam Smith by Adam Smith
July 3, 2021
in TECHNOLOGY
Reading Time: 4 mins read
0
Integrated Circuits Piezoelectric-A Detailed Overview

The 7.3ICP sensor (integrated circuits piezoelectric) sensor refers to the built-in piezoelectric sensor with different characteristics. It uses modern integrated circuit technology to place the traditional charge amplifier in the sensor, all high-impedance circuits are sealed in the sensor, and output in a low-impedance voltage mode. The output voltage amplitude is proportional to the acceleration. It is a new type of acceleration sensor.

The main features of ICP sensors are as follows:

  1. Reasonable structure and optimized circuit. The main components and connectors are all produced in the United States or Taiwan, with high precision, low noise, and low drift, ensuring stable and reliable product quality.
  2. The output can be equipped with a long cable without affecting the measurement accuracy.
  3. The output can be directly used with a digital multimeter, oscilloscope, or output to a data collector.
  4. The sensor is a fully enclosed structure that effectively prevents dust, moisture, and harmful gases.

Principle of 7.3 ICP:

The output signal of the icp sensor cannot be directly obtained by the AD acquisition circuit, it must be powered by the constant current source circuit, and it’s signal adjusted into a standard signal (such as ±5v).

Advantages of 7.3ICP:

  1. No need to connect a charge amplifier, easy to use, flexible, especially suitable for on-site testing and online monitoring.
  2. High precision. It is not susceptible to on-site interference. Since the output of the icp sensor is the amplified signal, the interference has little effect on it and the signal-to-noise ratio is high. Even in the harsh factory environment, the icp acceleration sensor can also use ordinary coaxial cables for long-distance transmission of voltage signals. This is the reason why the icp acceleration sensor is widely used, but it needs a constant current source for its power supply.

Application of 7.3 ICP:

Piezoelectric acceleration is the most widely used in vibration and shock. But because the pressure-sensitive element of the piezoelectric sensor has a high impedance. A front-end is required to convert the high-impedance output signal of the sensor into a low-impedance signal. The external preamplifier can be divided into two types: voltage amplifier and charge amplifier. Although the voltage amplifier has a simple structure, good linearity. And stability, its sensitivity is affected by the distributed capacitance. When the length of the connecting cable changes, the voltage sensitivity Changes will follow.

Although the sensitivity of the charge amplifier is slightly affected by the distributed capacitance of the cable. When the cable is subjected to vibration and bending. Static charges are generated between the cable core and the insulator. And between the insulator and the metal shield due to relative friction. Which will cause cable noise. These have brought trouble to the test work. Ice sensor is compared. With a piezoelectric sensor with an external preamplifier, it can overcome the above shortcomings.

A typical icp system usually uses a constant current source for power supply. And the power supply cable is also used as a signal output line to output low-impedance signals. The whole system includes ICP sensor, an ordinary two-core cable, and an uninterruptible power supply. All icp systems need an uninterruptible power supply to provide constant current for the icp sensor.

The choice of sensor:

There are many specifications of ICP acceleration sensors, and each type of sensor has its special application occasions. Therefore, in order to obtain high-fidelity test data, users need to select the most suitable piezoelectric acceleration sensor according to their test requirements.Also read it . Generally, there are three main trade-off factors for the selection of acceleration sensors: weight, frequency response, and sensitivity.

 

AUTHOR BiO: I am Ella Stearn, a qualified blogger and web developer. Here on SNOWTICA, you can have an idea of my expertise. You can also visit services for more information. I love to write a blog on various topics, like health, Technology, Business, Travel, Lifestyle, sports, Food, Finance, etc. For more information contact here.

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