CN101924390B - Method for preventing power failure of server cabinet system - Google Patents

Abstract

The invention discloses a method for preventing power failure of a server cabinet system, which belongs to the technical field of power supply of server cabinet systems. A battery pack module is used as a backup power supply module to supply power to the server cabinet system; the battery pack module includes a battery pack, a capacity monitoring module and The alarm monitoring module, the capacity monitoring module and the alarm monitoring module are all connected to and monitor the data of the battery pack; the capacity monitoring module and the alarm monitoring module are connected to the monitoring computer; the capacity monitoring module includes a processor module, a data acquisition module, an RS485 communication interface, Single voltage test module, current test module, internal resistance test module, temperature test module. Compared with the prior art, the method for preventing power failure of the server cabinet system of the present invention can provide uninterrupted power supply, prevent system downtime after power failure, reduce the procurement cost of the cabinet system, and improve the market competitiveness of the cabinet system.

Description

A method for preventing power failure of server cabinet system

technical field

The invention relates to the technical field of power supply of a server cabinet system, in particular to a method for preventing a server cabinet system from being powered off.

Background technique

The rapid development of the Internet has resulted in explosive growth of information resources. People use the Internet as a media, and their demand for information is also increasing. Various large-scale data computer rooms have also emerged as the times require. The number of individuals—servers and storage cabinets—that make up a data center is also increasing. As a result, new requirements are put forward for the technology related to the cabinet system. Because in the server cabinet, the individual that composes the cabinet—the server computing node, is required to be able to provide services for network users uninterruptedly for a long time. It is necessary to ensure that the server can work stably and normally even in harsh working environments. Can not cut off the power.

The traditional method uses UPS power supply as the backup power supply of the cabinet system to meet the uninterrupted power supply of the cabinet system. UPS is the English abbreviation of uninterruptible power system. It can maintain power supply for a period of time when the mains power supply stops, so that people have time to save the disk, and then shut down the machine calmly. But the cost of UPS power supply is higher.

Contents of the invention

The technical task of the present invention is to provide an uninterrupted power supply, prevent system downtime after power failure, reduce the procurement cost of the cabinet system, and improve the market competitiveness of the cabinet system. A method for preventing power failure of the server cabinet system.

The technical task of the present invention is achieved in the following manner, adopting the battery pack module as a backup power supply module to supply power to the server cabinet system; the battery pack module includes a battery pack, a capacity monitoring module and an alarm monitoring module, a capacity monitoring module and an alarm monitoring module Both connect and monitor the data of the battery pack; both the capacity monitoring module and the alarm monitoring module are connected to the monitoring computer; the capacity monitoring module includes a processor module, a data acquisition module, an RS485 communication interface, a single voltage test module, a current test module, an internal resistance test module and temperature test module; single voltage test module, current test module, internal resistance test module, and temperature test module are all connected to the battery pack and the upper data acquisition module, the data acquisition module is connected to the processor module, and the processor module is connected to the RS485 communication interface; single voltage test module, current test module, internal resistance test module, temperature test module transmits the relevant data of the battery pack to the data acquisition module; the data acquisition module transmits the data to the processor module; the processor The module is connected to the RS485 communication interface; the RS485 communication interface is connected to the monitoring computer; the alarm monitoring module is connected to and monitors the battery pack and the server cabinet system, and the alarm monitoring module is connected to the monitoring computer through the TCP/IP network.

The alarm monitoring module samples the voltage of each battery in the battery pack online, and monitors the voltage fluctuation of each battery in real time; monitors the external power supply voltage and current in real time; samples the temperature, humidity and smoke sensor data of the server cabinet in real time; alarm monitoring The module displays, alarms and controls the sampled data. The various data collected by the alarm monitoring module are transmitted to the monitoring computer for screen presentation and high and low threshold judgments. Alarms are displayed with sound and red text for those who exceed the limit, and historical data is transferred. storage and statistical analysis.

Compared with the prior art, a method for preventing power failure of the server cabinet system of the present invention adopts a battery pack with a sufficiently large power reserve to replace the UPS power supply of the prior art, which can provide uninterrupted power supply and prevent the system from going down after the power supply is cut off. machine, while using the battery monitoring module and the alarm monitoring module to monitor and alarm the capacity and working status of the battery pack in real time; and it can reduce the procurement cost of the cabinet system and improve the market competitiveness of the cabinet system; therefore, it has a good Promote use value.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings.

Accompanying drawing 1 is a structural schematic block diagram of a method for preventing a server cabinet system from being powered off;

Accompanying drawing 2 is the relational graph of battery pack internal resistance and remaining power.

Detailed ways

A method for preventing power failure of the server rack system of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Example:

A method for preventing power failure of the server cabinet system of the present invention uses a battery pack module as a backup power supply module to supply power to the server cabinet system; the battery pack module includes a battery pack, a capacity monitoring module and an alarm monitoring module, a capacity monitoring module and an alarm monitoring module. The monitoring modules are all connected to and monitor the data of the battery pack; the capacity monitoring module and the alarm monitoring module are connected to the monitoring computer; the capacity monitoring module includes a processor module, a data acquisition module, an RS485 communication interface, a single voltage test module, and a current test module , internal resistance test module, and temperature test module; the single voltage test module, current test module, internal resistance test module, and temperature test module are all connected to the battery pack and the upper data acquisition module, the data acquisition module is connected to the processor module, and the processor The module is connected to the RS485 communication interface; the monomer voltage test module, current test module, internal resistance test module, and temperature test module transmit the relevant data of the battery pack to the data acquisition module; the data acquisition module transmits the data to the processor module after collection; The processor module is connected to the RS485 communication interface; the RS485 communication interface is connected to the monitoring computer; the alarm monitoring module is connected to and monitors the battery pack and the server cabinet system, and the alarm monitoring module is connected to the monitoring computer through the TCP/IP network.

The alarm monitoring module samples the voltage of each battery in the battery pack online, and monitors the voltage fluctuation of each battery in real time; monitors the external power supply voltage and current in real time; samples the temperature, humidity and smoke sensor data of the server cabinet in real time; alarm monitoring The module displays, alarms and controls the sampled data. The various data collected by the alarm monitoring module are transmitted to the monitoring computer for screen presentation and high and low threshold judgments. Alarms are displayed with sound and red text for those who exceed the limit, and historical data is transferred. storage and statistical analysis.

The capacity monitoring module is used as a local monitoring system; the capacity monitoring module mainly completes the following functions: online detection of the remaining capacity of the battery pack, conversion of average/float charging mode, single terminal voltage test and backward battery detection, battery body temperature test.

The processor module is the core of the capacity monitoring module, which not only ensures high-speed analysis and processing of large amounts of data, but also realizes the function of saving and querying data. In the data acquisition module, since the data to be processed in the capacity monitoring module unit has special requirements for accuracy (for example, the measurement of the internal resistance of the battery pack is usually mΩ level, and there must be enough digits), and because the battery pack Both internal resistance and voltage are low time-varying signals that change slowly, so a 16-bit A/D converter is used, which has the functions of automatic zero calibration and automatic range calibration, so as to ensure high measurement accuracy, and has SPI The interface can be easily interfaced with the microcontroller. The capacity monitoring module is provided with an RS485 communication interface, and exchanges data with the main processor of the monitoring computer in the form of communication. The online detection function of the remaining capacity is closely related to the reliability of the entire power supply system. The higher the remaining capacity of the battery pack, the higher the reliability of the system, otherwise vice versa. Therefore, how to monitor the remaining power of the battery pack on-line in real time without consuming the energy of the battery pack or affecting the normal operation of the electrical equipment will have important practical significance. Since the battery pack is a complex electrochemical system, when it operates under different load conditions, the actual amount of electricity that the battery pack can release is also different. As the battery pack age increases, the actual amount of power it can discharge will also decrease. In the past, the quality of the battery and the amount of remaining power were often judged based on the terminal voltage of the battery pack, but this method has great limitations. As the battery ages, its terminal voltage does not change significantly. Therefore, it is difficult to calculate the remaining power by using the change of the terminal voltage, and the error is relatively large. The present invention adopts the internal resistance method, because the correlation between the internal resistance and the battery capacity is very good, and the correlation coefficient can reach 88%. Therefore, by measuring the internal resistance of the battery, its remaining power can be predicted more accurately. When the battery is fully charged (full) and fully discharged (discharged), the difference in internal resistance is about 2 to 4 times. As the charging process of the battery proceeds, the internal resistance gradually decreases; as the discharging process proceeds, the internal resistance gradually increases. In addition, as the battery ages, its internal resistance gradually increases, and its remaining power also decreases. The relationship curve between the internal resistance of the battery and the remaining power is shown in Figure 2.

Since the change rate of the internal resistance of the battery is much greater than the change rate of the battery terminal voltage (the change rate of the terminal voltage is about 30%~40%) when the battery is fully charged and fully discharged, it is more difficult to predict the remaining power of the battery by measuring the internal resistance of the battery. The open circuit voltage method is much more accurate. The advantage of the internal resistance method is that for batteries used online, this method has the least impact on the system and can be accurately measured throughout the battery's service life.

Alarm monitoring module: The battery pack is an important component to ensure the power supply of the cabinet system when the power grid suddenly fails. Whether its work is normal or not is directly related to the safety of the computer, network and other equipment in the cabinet and the data security of the information system. It is one of the important links in the safe production of the information system and must be given great attention. One kind of failure is manifested by the increase of the internal resistance of some batteries, which affects the normal discharge of the entire battery pack, and causes the power to stop working and the load to lose power when the power grid suddenly fails. What's more serious is that the increase in internal resistance of some batteries cannot be detected and replaced in time, which will cause internal heating and internal pressure to increase and explode. Another kind of failure is that due to the inconsistency of battery parameters, the capacity of some batteries decreases, and the voltage drop accelerates during discharge, which reduces the effective backup time and needs to be replaced in time. The alarm monitoring module is developed for the above requirements. Through real-time monitoring of each battery in the battery pack, the phenomenon of excessive voltage or sudden high and low (increased internal resistance) and low voltage (decreased capacity) can be detected in time. Timely alarm, and provide the necessary analysis of historical data, to achieve the correct maintenance of the battery pack, so as to ensure the normal operation of the server cabinet system.

A method for preventing power failure of the server cabinet system of the present invention is very simple and convenient to manufacture, as shown in the accompanying drawings.

Except for the technical features described in the instructions, all are known technologies by those skilled in the art.

Claims (1)

1. a method that prevents power failure of server cabinet system is characterized in that adopting battery module to power to server cabinet system as the back-up source module; Battery module comprises battery pack, capacity monitor module and alarm monitoring module, and the capacity monitor module is connected with the alarm monitoring module and is connected and the data of monitoring battery group; Capacity monitor module and alarm monitoring module are all received on the supervisory control comuter; The capacity monitor module comprises processor module, data acquisition module, RS485 communication interface, monomer voltage test module, testing current module, internal resistance test module, temperature test module; Monomer voltage test module, testing current module, internal resistance test module, temperature test module all are connected on battery pack and the data acquisition module, and data acquisition module connects processor module, and processor module connects the RS485 communication interface; Monomer voltage test module, testing current module, internal resistance test module, temperature test module will be measured the related data transmission of battery pack to data acquisition module; Data acquisition module is transferred to processor module after with data acquisition; Processor module connects the RS485 communication interface; The RS485 communication interface connects on the supervisory control comuter; The alarm monitoring module connects and monitoring battery group and server cabinet system, and the alarm monitoring module links to each other with supervisory control comuter by the TCP/IP network; The alarm monitoring module is carried out on-line sampling to the voltage of each piece battery in the battery pack, the voltage fluctuation situation of each piece battery of Real-Time Monitoring; Real-Time Monitoring dispatch from foreign news agency supply power voltage, electric current; Real-time sampling server cabinet temperature, humidity and smog sensing data; The alarm monitoring module is carried out display alarm and control to sampled data, the various transfer of data that the alarm monitoring module collects are to supervisory control comuter, carrying out screen presents and high low threshold judgement, the person of transfiniting is carried out sound and red literal display alarm, carry out dump and the statistical analysis of historical data; Processor module is the core of capacity monitor module, mass data is carried out high speed analysis process, and has realized the preservation inquiry to data; Data acquisition module has adopted 16 A/D converter, and has the SPI interface; The internal resistance test module is measured measurable its dump energy of battery pack internal resistance; The alarm monitoring module is by carrying out Real-Time Monitoring to each piece battery in the battery pack, find that in time the internal resistance increase causes overtension or fluctuated, and volume lowering causes the phenomenon of brownout, and alarm, thereby guarantees the normal operation of server cabinet system.

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