Laser high-temperature liquid height measurement and control system and method

Abstract

The invention provides a laser high-temperature liquid height measurement and control system. The system comprises a laser transmitter used for transmitting laser beams, a laser receiver used for receiving laser beams, a driving unit used for driving the laser transmitter and the laser receiver to rotate synchronously, a controller used for analyzing electric signals, calculating the liquid level height and change rate of high-temperature liquid according to a formula, and sending out warning information, and a liquid level control pump used for regulating the level of high-temperature liquid in a high-temperature container. Laser beams resistant to high temperature and interference are used as a measurement light source, the liquid level height and liquid level height change rate of high-temperature liquid can be measured in real time in a high-temperature environment, and the level of high-temperature liquid is regulated in real time. The invention further provides a laser high-temperature liquid height measurement and control method. The method comprises the steps of signal zero setting, liquid level measurement, liquid level regulation and the like and overcomes the defects of existing detection methods that adopted algorithms are complicated and detection precision is low.

Description

technical field

[0001] The invention relates to the technical field of laser measurement and control, in particular to a laser high temperature liquid height measurement and control system and control method. Background technique

[0002] At present, there are mainly the following types of non-contact liquid height positioning systems:

[0003] (1) Infrared height positioning system: The process of infrared distance measurement can be briefly described as: the infrared diode in the device emits a high-frequency modulation wave, and the modulated wave reaches the obstacle and reflects back to the device, and the photodiode in the device receives the returned signal. Perform voltage conversion, and finally calculate the height from the device to the liquid surface. However, because infrared light is easily affected by high-temperature liquid light, the measurement data changes greatly, and the accuracy cannot meet the operation requirements.

[0004] (2) Ultrasonic height po...

Examples

Embodiment 1

[0043] Embodiment 1: A laser high-temperature liquid height measurement and control system.

[0044] refer to figure 1 As shown, a laser high-temperature liquid height measurement and control system includes: a laser transmitter 10 and a laser receiver 20 located above the liquid level of the liquid to be measured and oppositely arranged, and the laser transmitter 10 and the laser receiver 20 are relatively The normal direction of the center is arranged symmetrically. A panel for receiving the laser beam is arranged on the laser receiver 20 facing the end face of the laser transmitter 10. A midpoint is set in the middle of the panel. Only when the laser beam emitted by the laser transmitter 10 is reflected To the midpoint of the panel, the controller starts to calculate, otherwise it will always drive the laser emitter 10 to change the laser emission angle;

[0045] The drive unit 30 is used to drive the laser transmitter 10 and the laser receiver 20 to rotate simultaneously....

Embodiment 2

[0057] Embodiment 2: A method for measuring and controlling the height of a laser high-temperature liquid.

[0058] refer to image 3 As shown, a method for measuring and controlling the height of a laser high-temperature liquid comprises the following steps:

[0059] S1. Signal zeroing of the laser transmitter 10 and the laser receiver 20: the controller 40 sends an instruction to make the laser transmitter 10 generate a laser beam of a specific frequency, and controls the drive unit 30 to make the laser transmitter 10 and the laser receiver 20 level state, so that the laser beam emitted by the laser transmitter 10 is irradiated to the center of the panel of the laser receiver 20 for zero adjustment, and after the zero adjustment is completed, record the current position as the zero position;

[0060] S2. High-temperature liquid level measurement: turn on the liquid delivery pump and send the liquid level of the liquid to be measured to a point M where the liquid level heigh...

technical field

[0001] The invention relates to the technical field of laser measurement and control, in particular to a laser high temperature liquid height measurement and control system and control method. Background technique

[0002] At present, there are mainly the following types of non-contact liquid height positioning systems:

[0003] (1) Infrared height positioning system: The process of infrared distance measurement can be briefly described as: the infrared diode in the device emits a high-frequency modulation wave, and the modulated wave reaches the obstacle and reflects back to the device, and the photodiode in the device receives the returned signal. Perform voltage conversion, and finally calculate the height from the device to the liquid surface. However, because infrared light is easily affected by high-temperature liquid light, the measurement data changes greatly, and the accuracy cannot meet the operation requirements.

[0004] (2) Ultrasonic height po...

Examples

Embodiment 1

[0043] Embodiment 1: A laser high-temperature liquid height measurement and control system.

[0044] refer to figure 1 As shown, a laser high-temperature liquid height measurement and control system includes: a laser transmitter 10 and a laser receiver 20 located above the liquid level of the liquid to be measured and oppositely arranged, and the laser transmitter 10 and the laser receiver 20 are relatively The normal direction of the center is arranged symmetrically. A panel for receiving the laser beam is arranged on the laser receiver 20 facing the end face of the laser transmitter 10. A midpoint is set in the middle of the panel. Only when the laser beam emitted by the laser transmitter 10 is reflected To the midpoint of the panel, the controller starts to calculate, otherwise it will always drive the laser emitter 10 to change the laser emission angle;

[0045] The drive unit 30 is used to drive the laser transmitter 10 and the laser receiver 20 to rotate simultaneously....

Embodiment 2

[0057] Embodiment 2: A method for measuring and controlling the height of a laser high-temperature liquid.

[0058] refer to image 3 As shown, a method for measuring and controlling the height of a laser high-temperature liquid comprises the following steps:

[0059] S1. Signal zeroing of the laser transmitter 10 and the laser receiver 20: the controller 40 sends an instruction to make the laser transmitter 10 generate a laser beam of a specific frequency, and controls the drive unit 30 to make the laser transmitter 10 and the laser receiver 20 level state, so that the laser beam emitted by the laser transmitter 10 is irradiated to the center of the panel of the laser receiver 20 for zero adjustment, and after the zero adjustment is completed, record the current position as the zero position;

[0060] S2. High-temperature liquid level measurement: turn on the liquid delivery pump and send the liquid level of the liquid to be measured to a point M where the liquid level heigh...

Images