Abstract：
Data centers are crucial computing and network infrastructure for the development of the digital economy. They provide equipment hosting and network access services to numerous enterprises and government agencies, ensuring the stable operation of their core businesses. They serve as network hubs, facilitating data exchange and supporting the digital transformation of various industries. Data centers are at the core of modern information technology, and their design and management directly impact the development of the global digital economy. This project, part of Gansu's new infrastructure project and the second phase of China Mobile's Lanzhou Data Center, holds significant strategic importance in the "Eastern Data, Western Computing" initiative, addressing the eastern region's computing needs and promoting the optimized allocation of data resources between the east and west. This article describes the application of ACREL's wireless temperature measurement products in the China Mobile (Lanzhou, Gansu) Data Center B02 project. By monitoring the temperature of key locations in real time and providing timely alerts, combined with temperature and humidity monitoring to coordinate environmental adjustments, the wireless temperature measurement products effectively mitigate the risk of failures caused by temperature anomalies, ensuring stable data center operations and providing essential support for data center operations and maintenance.
Keywords:
Data center, stable operation, wireless temperature measurement, temperature and humidity monitoring
1 Overview:
Data Center B02, located in the Northwest Big Data Industrial Park in Lanzhou, Gansu Province, is part of the China Mobile (Gansu Lanzhou) Data Center Phase II project. With a total construction area of approximately 26,000 square meters, it includes standardized computer rooms, a power center, and other facilities, with an installed capacity of approximately 3,587 racks. Construction began in February 2022, with the B02 data center's computer room topping out at the end of August. Mechanical and electrical engineering for the B02 machine building in Lanzhou, Gansu, will begin in 2025. The B02 machine building in Lanzhou, Gansu, is planned to accommodate 1,626 racks, and its supporting mechanical and electrical facilities include power systems, air conditioning systems, computer room processes, electrical systems, and intelligent systems.
As a new infrastructure project in Gansu, the project, upon commissioning, will contribute to the development of Gansu's digital economy and further implement the national "Broadband China" strategy. It will provide technical support for the development of Digital Lanzhou and smart cities, injecting new impetus and creating new space for the development of Lanzhou's artificial intelligence industry, 5G technology, and the industrial internet. The strategic value of this data center is particularly prominent within the national "Eastern Data West Computing" initiative. As a key computing power node in western China, it will effectively meet the overflow of computing power demand from eastern China. By integrating the abundant green energy resources (such as wind power and photovoltaics) in Gansu and surrounding areas, it will build a low-carbon computing power cluster. This will not only alleviate the shortage of computing power and energy consumption in eastern China, but also promote the optimized allocation of data resources between the east and west, accelerating the formation of a coordinated "eastern data, western storage, eastern computing, western rendering" model, and providing a key support for the balanced layout of the national computing power network. The completion of this data center is not only a milestone in the upgrade of Gansu's digital infrastructure, but will also become a key engine for activating regional innovation momentum, connecting with the implementation of national strategies, and driving profound industrial transformation, laying a solid foundation for Gansu's leapfrog development in the digital economy era.
Our company has partnered with ZTE to complete the China Mobile Gansu Lanzhou Data Center B02 project.
2 Product Requirements and Configuration Plans:
2.1 Product Requirements
For the B02 project at China Mobile's Lanzhou, Gansu data center, wireless temperature measurement products were required to monitor the status of low-voltage cabinets within the plant's power distribution system.
First, the project required wireless temperature measurement of low-voltage drawer cabinets. Due to the limited space within the cabinets, the ATE400, with its passive sensing capability, was selected as the temperature measurement device. Second, the project required data upload via an RS485 interface, so the ATC600-C was selected as the transceiver. Furthermore, considering space constraints within the power distribution room, the ATC600-Z was selected as the repeater. Finally, the project required monitoring of the ambient temperature and humidity within the cabinets, so the AHE100 was selected for temperature and humidity measurement. Requirements for wireless temperature sensors are as follows:
1) Non-battery-powered (powered by induction) wireless temperature sensors
2) Wireless frequency: 470 MHz
3) Starting current: ≥ 5 A
4) Temperature measurement range: -50°C to +125°C
5) Sampling frequency: 15 seconds
6) Transmission frequency: 15 seconds
7) Accuracy: ±1°C
8) Operating temperature: -40°C to +85°C
9) Maximum operating current: Primary rated current 5000 A
10) Temperature rise requirement: Under rated operating conditions, the device should not reach temperatures that could affect the insulation of the switchgear primary equipment or the normal operation of the measured point. When the current transformer coil of the device passes 1250 A for 30 minutes and the ambient temperature is 20°C, the surface temperature rise of the wireless temperature sensor should not exceed 10 K.
11) Transmission distance: No more than 150 meters in open air. The requirements for the receiver are as follows:
1) Power supply: DC 24V;
2) Transmission distance: No more than 150 meters in open space;
3) Communication interface: One RS485 serial communication interface, Modbus-RTU protocol;
4) Mounting method: 35mm DIN-rail mounting.
The requirements for the temperature and humidity sensor are as follows:
1) Power supply: Battery-powered;
2) Transmission distance: No more than 500 meters in open space;
3) Measurement range: -30°C to 85°C, 0% to 100%RH;
4) Sampling frequency: 25 seconds;
5) Transmission frequency: 5 minutes (reports temperature changes ≥2°C or humidity changes ≥5%RH in advance);
6) Accuracy: ±1°C for temperature, ±3%RH for humidity;
7) Mounting method: 35mm DIN-rail mounting.
Based on the above requirements, the ACREL wireless temperature measurement products were selected as shown in the following table:
ACREL ATC600-C
Wireless transceiver , receive daata from 240 ATE400 sensors , 1RS485 , 2 alarm relays
Acrel AHE100
Temperature and humidity wireless sensor
Acrel ATE400
Wireless temperature sensor
2.2 Configuration Plan
This project primarily focuses on configuring low-voltage drawer cabinets, encompassing a total of 18 distribution rooms. We installed three-point temperature measurement on the low-voltage busbars, three-point temperature measurement on the outgoing line circuits, temperature and humidity measurements inside the cabinets, and ambient temperature and humidity measurements.
Taking some drawings as an example, the following is a primary drawing:
3 On-site installation pictures:
Three-point temperature measurement is implemented in the low-voltage incoming busbar cabinet, the low-voltage drawer cabinet, and the cabinet's internal and ambient temperature and humidity. The wireless temperature transceiver and power module are installed in the cabinet's cable compartment.
Post time: Aug-11-2025
