Application of 3G industrial wireless RTU based on wireless monitoring of cooling tower

The function of the cooling tower is to exchange the cooling water carrying waste heat with the air inside the tower body, so that the waste heat is transferred to the air and dispersed into the atmosphere. Widely used in air conditioning cooling system, freezing series, injection molding, leather making, foaming, power generation, steam turbine, aluminum profile processing, air compressor, industrial water cooling and other fields. Sudden accidents such as oil leakage and over-vibration have been extremely harmful during the operation of cooling towers. With the development of the Internet of Things technology, cooling tower remote monitoring systems have emerged in response to cooling tower failures.

System function overview: After collecting data from the cooling tower equipment, the data is transmitted to the server in real time through the GPRS network, and the user can check the operation status of the equipment anytime, anywhere. At the same time, when the equipment runs abnormally, the system will automatically send an early warning message to the user, allowing the user to overhaul the equipment in advance to prevent further damage to the equipment and ensure safe production.

The system is mainly composed of three parts:

1. Control center

The host computer software is running on the computer of the control center, which sets the cooling tower parameters of each area. The real-time data on the site is actively reported through the GPRS network online host computer. The host computer software will analyze and count the reported field data on the page. The real-time running status is displayed through icons, and the corresponding historical data is stored, and special operations can be performed manually.

2. GPRS wireless acquisition controller (Sixin 3G industrial wireless RTU)

Sixin 3G industrial wireless RTU ---- F2X64 series wireless remote measurement and control terminal is a high-performance measurement and control device that integrates analog signal acquisition, digital input, digital output, counting and wireless data communication. It can directly access various Analog signals, level signals, dry contacts, pulse signals, etc. output by sensors, standard transmitter signals, instruments, etc., are remotely transmitted to the monitoring center through the GPRS wireless network, and the data transmission function from the field collection to the monitoring center is realized.

3. Sensors Mainly use oil temperature sensors, vibration sensors, air volume sensors, oil level sensors, etc. Each sensor monitors the operation status of the cooling tower in real time. Connect the analog quantity of the sensor directly to the IO port of Sixin Industrial Wireless RTU.

The topology diagram is as follows:

The role of Sixin Communication Industrial Wireless RTU F2X64 in the system: F2X64 is connected to each sensor to automatically collect data such as oil temperature, noise and wind speed of the cooling tower, and sends the data to the control in real time through the wireless communication network (GPRS, CDMA, etc.) The center and the control center analyze and process the reported data, so that the monitoring personnel can understand the real situation on the spot in time. The control center can set the system parameters. When the device operation parameters reach the set value, the system will automatically send the device operation abnormal information to the user's mobile phone by SMS, so that the user can keep abreast of the device operation abnormality and prevent device damage.

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