The Teng River flows eastward. Near Tengcheng, there are many tributaries, and the situation of drought and flood is uncertain. Qi Yanliang and others also want to find out the factors that affect the direction of the river and predict the direction of the river and the conditions of its tributaries. The main factors affecting the direction of the river are topography and topography, followed by geological structure, rock erosion resistance, curve circulation and horizontal geostrophic deflection force.
Qi Yanliang said: "Let's go to Bingcheng to see it."
Ren Li said: "Who else do I need to see?"
Qi Yanliang said: "There are two old friends. He Yushen and Chu Qian. He Yushen is in Bingcheng. He used to study photon computing, and now he may be working on new sensors. Ask him. There is also Chu Qian. Use land features Spectral methods may be effective.”
They took the train all the way north, the temperature gradually dropped, and they felt that they wore less clothes. I had already put on my down jacket when I got off the car.
After walking for a while, I felt the cold weather. But I was already wearing thick clothes, so I still had to find a place to stay warm.
There was thick snow on the roof and ice on the branches. There is also a thick layer of ice on the river. There are buildings nearby, and mountains and forests covered with snow for many years in the distance.
He Yushen drove to pick him up. Meeting an old friend in a foreign country is a very happy thing.
The road was very slippery and the car was going slowly. If there is a situation ahead, if you brake at this time, the car will still slide out for a distance. When I first arrived at this place, when I applied the brakes, I found that the car would not stop at all.
Qi Yanliang said: "Long time no see."
He Yushen said: "Yes, I heard that you have done a big project in the south."
Qi Yanliang said: "This project is a bit big, so I need your help in some places."
He Yushen said: "If you have anything to say, just say it. As long as I can help, I will try my best to do it."
Qi Yanliang said: "While working on the water storage project, I found that the water flow often changes. Are there any sensors that can monitor the changes in the water flow? This includes the water system characteristics and hydrological characteristics of the river."
The difference between the water system characteristics and hydrological characteristics of a river is that the water system refers to the structure of the river channel, while the hydrological characteristics refer to the characteristics of the river water. Water system characteristics are the "look" of the river, how long (flow), how wide (watershed area), horizontally or vertically (flow direction), straight or curved (river bending status), etc. Hydrological characteristics are a series of indicators of river water measured by hydrological stations, such as flow, sediment content, flood season, freezing period, water level, water energy, flow velocity, transparency, etc.
He Yushen said: "There are some flow sensors and pressure sensors."
For ultrasonic flow meters, simply clamp the flow sensor to the pipe surface. Then the ultrasonic flowmeter can detect the flow rate by emitting and receiving the time or frequency of ultrasonic waves, and then automatically calculates the flow rate value, etc. As long as the pipe is in good condition, the installation on the flow meter does not offer the possibility of leaks.
Traditional mechanical flow meters must use moving parts to detect flow. This will destroy the stream state. Flow accuracy decreases as moving parts are used. The moving parts will be damaged, and the flow measuring device will have to be replaced with a new one. Ultrasonic flow meters have no moving parts and do not need to come into contact with the fluid, so there is no pressure loss. No pressure loss means you don’t need to do pressure compensation, which saves the cost of the pressure transmitter.
The vortex flow sensor is developed based on the Karman vortex principle. When a triangular prism-shaped vortex generator is installed in the fluid, regular vortices are generated alternately from both sides of the vortex generator. This vortex is called a Karman vortex. The flow rate is measured by measuring the number of Karman vortices.
"There are also mapping sensors that map data from one space to another space and detect multiple points at the same time."
Qi Yanliang said: "The word mapping sounds familiar to me."
He Yushen said: "This is a new concept."
Qi Yanliang said: "I remembered, this concept was also mentioned in the mining city. Some strange stones were found in the mining city. Electric distribution stones, using the control end stone can control the electron distribution in another area. Thermal distribution stones, You can use the control stone to control the heat distribution in another area. This sounds incredible. Some people have proposed the concept of mapping, which is to change some particles in one space and then map them to another space, and some particles in another space. Region, the corresponding various particles also make the same changes, such as changes in temperature distribution, or changes in electron distribution. This can also be extended to other application fields, such as changes in light and changes in force."
He Yushen said: "It seems that the mapping we are talking about is a similar concept. The mapping you are talking about is control. Changing parameters in the control end area affects the changes in parameters in the controlled end area. The mapping I am talking about is detection. The detection area Parameter changes will cause parameters in the parameter checking end area to change."
Qi Yanliang said: "Okay, just have some useful sensors."
He Yushen said: "I will take you to the hotel to stay first."
After they settled in, they came to his office again.
There was a balcony near the office, and they stood on the balcony and looked into the distance. There are some low houses nearby, and rolling mountains in the distance.
He Yushen said: "You remember when we were young, we also stood on the balcony of the parking lot and looked into the distance."
Qi Yanliang said: "Yes. There are other steel buildings and sand dunes in the distance. At that time, you still knew how to play, and I just hid in the parking car and worked on those mechanical parts."
He Yushen said: "You still have lofty ideals and firm will. Although it seems a bit hollow when I say this."
"And I only belong to the sad people. I lament that things and people have changed, and everything has changed. Once in Shacheng, I heard that a sandstorm was coming. We re-converted the various structures and built some windbreaks. Then I guessed that the building I looked into the distance from the top, but after waiting for a long time, the sandstorm did not come. I was already prepared for the disaster. Later, life was still very peaceful, with a feeling of surviving after a disaster. Maybe you have been pursuing and fighting , I was thinking about doing something big in the future. But I gave up. I wanted to do something that I really like to do, away from the hustle and bustle and away from the fight."
"After arriving in Ice City, there are only a few people here. Sometimes I will lament that any friend who has left this city may not come back for a long time, and may not meet again in the future. I may also forget it later, Which friend has left. We may even forget the things we did together. There are still things we want to do.”
Qi Yanliang felt that He Yushen reminded him. You really should calm down and think about what you want to do and what you haven’t done yet.
