The complete set of automatic weather stations is very expensive, and simple weather stations in the agricultural real-time monitoring are sufficient. Therefore, a small-scale weather station was designed and researched, and the signals of temperature, humidity, air pressure, wind direction, and rain sensor were collected by a single-chip computer. After RS232 to RS485 communication, the signal was transmitted to a PC no farther than a thousand meters away. LabVIEW was used on the PC. Receives and displays data from the serial port and can transfer this data over the network to other computers.
The weather sensor of the small weather station outputs a pulse signal and connects to the external interrupt pin IRQ to count the number of pulses in the external interrupt service routine. The timer counter program is scheduled for five minutes. When the time reaches five minutes, the counter value of the rainfall is first cleared and then cleared to re-count and the backup value is transmitted from the serial port.
At the same time, when the time arrives in five minutes, the AD conversion program is invoked to collect the air pressure and wind speed sensor output values. Call the IIC program to read the temperature and humidity values, read in the wind direction sensor output, and judge the wind direction according to the output line number where the high level is located. Data collection is completed and sent from the serial port to the PC. The PC side displays the corresponding wind direction, wind speed, temperature, humidity, air pressure, and rainfall values ​​in real time, and at the same time, it solves this problem.
At present, the small-scale meteorological station power grid monitoring system can monitor the voltage values, load current values, power values ​​and switch operating status of the downhole power supply system in real time, and can view relevant historical curves, and can set various high and low voltage protection values. Online modification, remote switching through the client's operation, real-time acquisition and processing of downhole power grid data, real-time alarm and positioning of short circuit, overload, overvoltage, leakage and other faults, and the system also reserves video And WEB interface, to facilitate the future expansion of the system.
River Sand Gold Separation
The STL water-jacketed Gold Concentrator is a kind of gravity separation equipment. It was developed by Changchun Gold Research Institute Co., Ltd. in 1985 and entered the market. At present, it has been used in many domestic and foreign companies. It is suitable for the recovery of single gold in placer gold, vein gold mines and polymetallic mines, instead of mercury plate operations. The addition of large single gold particles in the collected ore before flotation can further increase the recovery rate of gold mines, and it can also be used from gold-bearing mines. Separate single gold from flotation gold-copper concentrate and flotation gold concentrate.
The main indicators of this series of equipment basically reach the level of similar international products (such as Nielsen gold selectors, etc.). Compared with similar equipment at home and abroad, this series of equipment has the advantages of high cost performance, easy operation, and low maintenance costs.
Gold Separation System,Fluid Bed Gold Concentrator,Gold Rough Separating Machine,Gold Centrifugal Concentrator
Changchun Gold Research Institute Co.LTD , https://www.changchungoldresearch.com