Automatic fine-tuning focusing system
By using automatic fine -tuning the light system in the laser gas analyzer, using the control system and PSD position sensitive detector crystal board to automatically adjust the position of the laser, solve the problem of inaccurate measurement caused by the offset of the equipment, and achieve long -term stability of the equipment. Run and automatically fine -tune functions.
Patent Information
- Application Number
- CN202411469903.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2025-01-24
AI Technical Summary
When the pipe deformation causes the equipment position to be offset, the laser gas analyzer cannot accurately measure the gas content, and manual intervention and adjustment is required.
Use automatic fine -tuning the light system, including the launch end, receiving end, first flat convex lens, and second flat convex lens. Through the control system and PSD position sensitive detector crystal board, the position and pitch angle of the laser can be automatically adjusted to ensure that the light signal is accurately converged accurately. On the receiver.
It achieves long-term stable operation of the equipment without manual intervention, and can automatically fine-tune the light signal to ensure measurement accuracy and is not affected by seasonal changes or environmental vibrations.
Smart Images
Figure CN119354877A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of laser gas analysis. Background Art
[0002] Laser gas analyzers are used in environmental testing, combustion emission monitoring, industrial process control, environmental protection and other fields. In these fields, whether it is the external emission of gas or the mutual transmission of gas within the industry, it will be connected through pipelines. The laser gas analyzer is installed on the pipeline to detect the specified gas. Whether it is the temperature changes throughout the year or the changes in vibration, pressure, and temperature inside the industrial pipeline, it will cause the pipeline to deform and cause the equipment position to shift. The laser gas analyzer transmits light signals from one end and receives signals from the other end. Pipeline deformation will cause the transmitted signal to deviate from the target, causing the signal at the receiving end to weaken or even disappear, which will be detrimental to the correct analysis of the measured gas.
[0003] Most laser gas analyzers are fixed on the pipeline to be measured, and use screws and springs to adjust the position and pitch angle of the light source at the transmitting end or the receiving end so that the light signal hits the receiver exactly. Since the laser gas analyzer equipment adjusts the light source at the transmitting end or the receiving end through screws and springs, it can only make the optical path of the laser gas analyzer's transmitting end and the receiving end at the time exactly aligned. When the temperature changes, the pressure inside the pipeline changes, the displacement caused by the instrument's own gravity, etc., the laser gas analyzer's transmitting end is separated from the original transmitting position, and the laser gas analyzer's receiving end is separated from the original receiving position. Without manual intervention and adjustment, the equipment will not be able to accurately measure the content of the gas being measured. Summary of the invention
[0004] In view of this, the present invention provides an automatic fine-tuning light system, comprising: a transmitting end, a receiving end, a first plano-convex lens and a second plano-convex lens; the first plano-convex lens (on the transmitting end side) and the second plano-convex lens (on the receiving end side) are located between the transmitting end and the receiving end; the optical centers of the transmitting end, the receiving end, the first plano-convex lens and the second plano-convex lens are located on the same straight line.
[0005] Furthermore, it also includes a control system, which is connected to the signal lines of the transmitting end and the receiving end respectively.
[0006] Furthermore, the transmitting end comprises: a laser, a spherical gear, a first driving gear and a second driving wheel; the laser is located in front of the spherical gear, and the first driving gear and the second driving wheel are located in the rear of the spherical gear.
[0007] Furthermore, the receiving end includes: a signal receiving system, a receiver, and a PSD position sensitive detector crystal plate; the signal receiving system is connected to the PSD position sensitive detector crystal plate through a signal line; and the receiving end is arranged at the center of the PSD position sensitive detector crystal plate.
[0008] The system provided by the present invention can ensure long-term stable operation of the equipment without human intervention. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 This is a schematic diagram of the automatic fine-tuning light system.
[0010] Among them, 1 is a signal receiving system, 2 is a receiver, 3 is a PSD position sensitive detector crystal plate, 4 is a laser, 5 is a spherical gear, 6 is a driving gear, 7 is a transmitting end, 8 is a receiving end, 9 is a second plano-convex lens and 10 is a first plano-convex lens. DETAILED DESCRIPTION
[0011] Example
[0012] PSD position sensitive detector crystal plate: It is a device that can detect the photoelectric position and is widely used as a position sensor combined with a light source. PSD is basically a light sensor, also known as a coordinate photocell.
[0013] Spherical gears: Gears with the same size and equal spacing are distributed on the curved surface of a spherical cube.
[0014] In view of this, in order to reduce maintenance costs, if the optical signal at the transmitting end deviates from the target, its optical signal will be transmitted to the PSD position sensitive detector crystal plate, and the position information of the light spot will be calculated through the photoelectric effect and transmitted to the transmitting end. The transmitting end controls the rotation of the circular gear through the motor drive until it is adjusted to the appropriate position.
[0015] The invention provides an automatic fine-tuning light alignment system, comprising: a transmitting end, a receiving end, a control system, a first plano-convex lens (on the transmitting end side) and a second plano-convex lens (on the receiving end side).
[0016] The first plano-convex lens (on the transmitting end side) and the second plano-convex lens (on the receiving end side) are located between the transmitting end and the receiving end.
[0017] The centers of the transmitting end, the receiving end, the first plano-convex lens and the second plano-convex lens are located on the same straight line.
[0018] The control system is connected to the signal lines of the transmitting end and the receiving end respectively.
[0019] The transmitting end comprises: a laser, a spherical gear, a first driving gear and a second driving gear.
[0020] The laser emitted by the laser is collimated by a first plano-convex lens (on the transmitting end side) and converged on the receiver by a second convex lens (on the receiving end side).
[0021] The laser is located at the front of the spherical gear, and the first driving gear and the second driving gear are located at the rear of the spherical gear.
[0022] The receiving end includes: a signal receiving system, a receiver, and a PSD position sensitive detector crystal plate.
[0023] The signal receiving system is connected to the PSD position sensitive detector crystal plate through a signal line; the receiver is arranged at the center of the PSD position sensitive detector crystal plate. The PSD position sensitive detector crystal plate only receives the optical signal of the wavelength band emitted by the laser.
[0024] If the laser emitted by the laser cannot be focused on the receiver through the plano-convex lens, it will hit the PSD position sensitive detector crystal plate. The signal receiving system transmits the received optical signal and optical position signal of the PSD position sensitive detector crystal plate to the transmitting end. The transmitting end calculates the driving parameters through the control system and drives the driving gear to rotate. The driving gear can drive the spherical gear to rotate, and can also make the spherical gear turn, and drive the laser to deviate up, down, left, and right, so that the light emitted by the laser hits the receiver at the receiving end.
[0025] When seasonal changes or changes in vibration, pressure, and temperature caused by the environment at that time will cause the pipeline to deform, if the equipment is equipped with an automatic fine-tuning light system, the deformation of the pipeline will cause the light source at the transmitting end to transmit the light signal to a position that deviates from the fixed receiving position. At this time, the signal at the receiving end becomes weaker than before, and the PSD position sensitive detector crystal plate (the position sensitive detector crystal plate only receives the light signal in the wavelength band emitted by the laser) receives the deviated light signal and transmits the position where the light signal is generated to the control system. The control system drives the gear to rotate to adjust the pitch angle and position of the light source to transmit the light source to the fixed receiving position of the receiver. When the light signal received by the PSD position sensitive detector crystal plate is weak or even zero, and the light signal received by the receiver at the receiving end is within the specified range, the control system will stop adjusting the pitch angle and position of the light source. The deviated light signal will be re-transmitted to the fixed receiving position through the automatic fine-tuning light system, and automatic fine-tuning can be performed without manual intervention.
Claims
1. Automatic fine-tuning of the light system, The invention is characterized in that it comprises: a transmitting end, a receiving end, a first plano-convex lens and a second plano-convex lens; The first plano-convex lens and the second plano-convex lens are located between the transmitting end and the receiving end; The optical centers of the transmitting end, the receiving end, the first plano-convex lens and the second plano-convex lens are located on the same straight line.
2. The automatic fine-tuning light aiming system according to claim 1, characterized in that: It also includes a control system, which is connected to the signal lines of the transmitting end and the receiving end respectively.
3. The automatic fine-tuning light aiming system according to claim 1 or 2, characterized in that: The transmitting end comprises: a laser, a spherical gear, a first driving gear and a second driving gear; The laser is located at the front of the spherical gear, and the first driving gear and the second driving gear are located at the rear of the spherical gear.
4. The automatic fine-tuning light aiming system according to claim 1 or 2, characterized in that: The receiving end includes: a signal receiving system, a receiver, and a PSD position sensitive detector crystal plate; The signal receiving system is connected to the PSD position sensitive detector crystal plate through a signal line; the receiver is arranged at the center of the PSD position sensitive detector crystal plate.