In mid-September, at the request of the user, two technicians went to the site of Si Laogou Coal Mine in Datong, Shanxi Province for guidance and installation.
This trip to Datong, Shanxi, I thought about how to sum up for a long time, and finally felt that it was most suitable to describe a physical rally!
Let me start by driving from Xi'an to Datong, driving back and forth for more than 20 hours. It is more than 2,000 kilometers at high speed. The overall force consumes 70% of the feeling on the road.
I finally saw the "Wizanggou Coal Mine welcomes you", it is not easy~
However, the wonder of the field lies in the uncertainty of the unknown. There are sudden situations at any time or things that make you challenge yourself and there is no way out. A bit like an adventure, always in a state of high readiness! A bit like an adventure, always in a state of high readiness!
Why do I have to say so much?
Please see the picture below
Did you see the white house in the upper right corner?
It is where the launch is!
Straight line distance, no, more accurately it should be said that the aerial line of sight distance is about 800 meters.
Then the question is coming, how did I go up?
Continue to look at the picture below, this is only one third of the way
So you know me, I will mention "similar to adventure" before!
OK, my complaint time is over. Let me start talking about my work now.
Benefits of this program1. Easy to install, free of mountain and mountain wiring projects;
2. Can be used directly without having to make program changes;
3. No operating expenses, no need to worry about the flow costs incurred later.
User needsThere are two pools on the mountain to supply the production water for the mountain mine. It is necessary to monitor the pool level data in real time in the central control room and alarm at a specified low level.
In the case of low liquid level alarms, the control room should be able to water in time. If the water supply is not timely, it will delay the normal production operations of the coal mine.
skills requirementAccording to further communication with users, PLC wireless communication experts summarized the following points for the functional requirements of wireless communication:
1. The distance between the mountain pool and the central control room is about 800 meters, with a mountain bag in the middle.
2. Two pools on the mountain, about 10 meters adjacent
3. The depth of the pool is no more than 5 meters
4. Low level alarm
5. The value of the low level can be adjusted autonomously
Mountain pool real map â–¼
Yamashita centralized control room real map â–¼
Based on the above information, the PLC wireless communication expert team has customized a complete wireless communication solution for these rigid requirements.
In particular, the wireless communication devices used in the project and related display and alarm devices are grouped together in a wireless communication device. When the user is using it in the field, there is no need to make any program adjustments to the wireless communication device. You only need to set the water level value that needs to be alarmed on the digital display.
Wireless signal transmission device transmitter â–¼
Wireless signal transmission device receiving end â–¼
Implementation plan schematic diagram â–¼
1. No complicated wiring is required, and an external 220V power supply can be used;
2. No need to modify the program, you can set the alarm value directly on the digital display;
3. The construction period is shortened, saving the construction time of manual wiring;
4. The data is safe and reliable, using all-digital wireless encryption transmission;
5. There is no running cost in the later stage and no need for frequent maintenance.
Related successful user instance application excerpt
â— Xiangzhou County Wastewater Treatment Plant, sewage pool flow monitoring, 5 km
â— Ningbo Xinzheng Environmental Protection, sewage pool drainage control solar power supply, 1 km
â—Xiamen Gulong Food Co., Ltd., production water monitoring, 500 meters
â—Shijiazhuang Pharmaceutical Group, water level monitoring in deep water wells 2 out of 1 collection, 3 km
â—Shaanxi Weinan Thermal Power Plant, reservoir water level monitoring and remote control pump start and stop, 3 km
â—Shanghai People's Pump Factory, the water level of the mountain pool is controlled by the remote mountain pump, 2 km
â— Beijing Shougang Group, 15 deep water wells 4 road analog monitoring, 6 km
â— Yichun Luming Mining Co., Ltd., solar power water level unmanned control system, 3 km, 2017
â—Shiheng Special Steel Group, pool water level monitoring 2 rounds and 1 collection, 3 kilometers
â—Dalian Shante Mining Equipment Co., Ltd., mountain liquid level monitoring, 2 km
â— Huaneng Linyi Power Generation Co., Ltd., the reservoir wireless control pump starts and stops, 3 km
â— Xingyi Huangnihe Power Generation Co., Ltd., pool liquid level analog signal wireless transmission, 200 meters
â—Hebei Yuanxin Environmental Protection Technology Development Co., Ltd., sewage pool sewage control wireless control, 100 meters
â— Danjiangkou Water Supply Company, the water level of the reservoir unattended control pump starts and stops, 3 km
â—Zhangzhou Naxi Baiji Water Co., Ltd., mountain water level wireless monitoring system, 4.1 km
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