Working principle of laser range finder The role of crystal oscillator in laser range finder
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Working principle of laser range finder The role of crystal oscillator in laser range finder

Posted Date: 2024-01-27

Working principle of laser range finder The role of crystal oscillator in laser range finder

A laser rangefinder is an instrument that uses laser technology to measure the distance of objects. It calculates the distance from an object to the rangefinder by measuring the time it takes for a laser pulse to travel through the air. The following will introduce in detail the working principle of the laser rangefinder and the role of the crystal oscillator in it.

The working principle of the laser rangefinder is mainly divided into three parts: laser emission, laser reception and distance calculation. First, the laser transmitter emits a highly focused laser pulse, which is focused through an optical system to a very small point. The laser beam is then fired at the object and reflected back to the laser rangefinder.

Next, the laser receiver measures the return time of the laser pulse by receiving the laser signal. When the laser pulse returns, a receiver senses the signal and converts it into an electrical signal. The receiver then sends the received signal to the ranging calculator.

In the ranging calculator, it calculates the distance from the object to the rangefinder based on knowledge of the laser pulse return time and the speed of light. The speed of light in air is a known quantity, so as long as the return time of the laser pulse is measured, the distance can be accurately calculated.

In the working process of the laser rangefinder, the crystal oscillator plays an important role. A crystal oscillator is a device that converts electrical energy into mechanical vibration energy. In a laser rangefinder, a crystal oscillator converts electrical energy into mechanical vibration energy to produce stable laser pulses.

The stability of the crystal oscillator has an important impact on the measurement accuracy of the laser rangefinder. First of all, the vibration frequency of the crystal oscillator directly determines the time accuracy of laser pulse emission and reception. If the crystal oscillator frequency is unstable, the laser rangefinder will not be able to accurately measure the laser pulse return time, which will affect the accuracy of distance calculation.

At the same time, the stability of the crystal oscillator is also related to the long-term use of the laser rangefinder and environmental changes. The vibration frequency of the crystal oscillator may be affected by factors such as temperature, humidity, vibration, etc., resulting in changes in the measurement accuracy of the laser rangefinder. In order to maintain the accuracy of the laser rangefinder, the crystal oscillator needs to have high stability and be able to provide reliable operation under different environmental conditions.

In addition, the crystal oscillator also needs to provide sufficient amplitude to generate stable laser pulses. The optical system in the laser rangefinder has high requirements on the quality of the laser pulse, which requires the laser pulse to have high intensity and stability. As the energy source of the laser pulse, the crystal oscillator needs to have sufficient amplitude to meet the requirements of the optical system.

To summarize, a laser rangefinder measures the distance of an object by utilizing laser technology. The crystal oscillator plays a key role in this, providing a stable vibration frequency and sufficient amplitude to ensure the quality of the laser pulse and the ranging accuracy. The stability of the crystal oscillator has an important impact on the measurement accuracy of the laser rangefinder. Therefore, in the design and manufacturing process of the laser rangefinder, it is necessary to select crystal oscillator equipment with reliable quality and good stability to ensure the accuracy and reliability of the laser rangefinder.


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