WO2018192435A1

WO2018192435A1 - Alarm method and device for electric equipment

Info

Publication number: WO2018192435A1
Application number: PCT/CN2018/083170
Authority: WO
Inventors: 杜永红; 孟燕妮; 崔江斌
Original assignee: 中兴通讯股份有限公司
Priority date: 2017-04-18
Filing date: 2018-04-16
Publication date: 2018-10-25
Also published as: CN108732413A; CN108732413B

Abstract

An alarm method and device for electric equipment, the method comprising: acquiring the instantaneous input voltage of input electric equipment (S202); determining the number of times that the instantaneous input voltage of the input electric equipment is lower than a predetermined voltage threshold (S204); and reporting an undervoltage alarm when the number of times is greater than a predetermined threshold (S206).

Description

Alarm method and device for electric equipment

Technical field

The present disclosure relates to the field of communications, and in particular to an alarm method and apparatus for a powered device.

Background technique

In the communication base station application, there are many scenarios in which the distance between the power supply and the communication device is several hundred meters, such as a radio remote unit (RRU), a DC remote unit, and an indoor baseband processing unit (Building Base Band Unit, Referred to as BBU) DC remote, outdoor BTS DC pull and so on. With the development of technology, the system does not simply provide power supply for the positioning of the power supply unit of the communication equipment, but hopes to integrate more into the integrated management of the system. Therefore, the power supply management of communication equipment is more and more software and refined, real-time monitoring and control of the status and information of the power supply, and the system combines these information for management.

In the actual use of communication equipment, the following scenarios often occur: 1. When the system service increases, the performance index of the communication equipment decreases. It is impossible to determine the specific reason through the background; 2. The whole equipment has a communication interruption in the external field but no power alarm; Some of the external machines that appear in the field cannot be powered on, and the test is good after the repair; 4, the system suddenly loses power when the battery is powered down, and the information is saved and reported. There are many reasons for the above situation. When the system configuration is unreasonable, such as power supply cables, one power-off point, etc., it is also one of the reasons. Usually, the system configuration is implemented according to experience or standards, although it can satisfy most scenarios. Requirements, but for communication equipment with poor adaptability to load characteristics, there is a problem that the system configuration that best matches the real system characteristics cannot be obtained.

Summary of the invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

Embodiments of the present disclosure provide an alarm method and apparatus for an electrical device.

According to an embodiment of the present disclosure, a method for alerting an electrical device is provided, comprising: acquiring an instantaneous input voltage input to the powered device; determining that an instantaneous input voltage input to the powered device is lower than a preset voltage The number of thresholds; reporting an undervoltage alarm when the number of times is greater than a predetermined threshold.

In an exemplary embodiment, before acquiring the instantaneous input voltage input to the powered device, the method further includes: determining predetermined information, wherein the predetermined information includes: for powering the powered device The voltage of the power source, the maximum traffic power of the system, the operating voltage range of the power source, and the actual current input to the power device; and calculating a line connecting the power source between the power source and the power device according to the predetermined information The impedance of the cable; the specification of the cable is determined based on the impedance of the cable.

In an exemplary embodiment, after determining the specification of the cable according to the impedance of the cable, the method further includes: determining a lowest value of the instantaneous input voltage of the powered device; according to the voltage of the power source Determining a maximum voltage drop with a minimum value of the instantaneous input voltage; redetermining the specification of the cable based on the maximum voltage drop.

In an exemplary embodiment, after reporting the undervoltage alarm when the number of times is greater than the predetermined threshold, the method further includes: starting a cable for connecting the powered device according to the undervoltage warning The judgment operation of the specification.

In an exemplary embodiment, after the determining operation of initiating the specification of the cable for the powered device connection according to the undervoltage warning, the method further comprises: inputting the instantaneous input voltage of the powered device The input current is reported to the network management to instruct the network management to adjust the voltage of the powered device according to the instantaneous input voltage and the input current and/or perform system load reduction.

According to another embodiment of the present disclosure, there is also provided an alarm device for an electrical device, comprising: an acquisition module configured to acquire an instantaneous input voltage input to the powered device; and a first determining module configured to determine the input The instantaneous input voltage of the powered device is lower than the preset voltage threshold; the first reporting module is configured to report an undervoltage alarm when the number of times is greater than a predetermined threshold.

In an exemplary embodiment, the apparatus further includes: a second determining module configured to determine predetermined information, wherein the predetermined information includes: before acquiring the instantaneous input voltage input to the powered device, a voltage of a power source for supplying power to the power device, a maximum traffic power of the system, an operating voltage range of the power source, and an actual current input to the power device; and a calculation module configured to calculate the power source according to the predetermined information An impedance of a cable connecting the power source to the powered device; and a third determining module configured to determine a specification of the cable according to an impedance of the cable.

In an exemplary embodiment, the apparatus further includes: a fourth determining module configured to determine a minimum value of the instantaneous input voltage of the powered device after determining the specification of the cable according to the impedance of the cable a fifth determining module, configured to determine a maximum voltage drop according to a voltage of the power source and a lowest value of the instantaneous input voltage; and a sixth determining module configured to re-determine a specification of the cable according to the maximum voltage drop.

In an exemplary embodiment, the apparatus further includes: a seventh determining module, configured to: after the undervoltage alarm is reported, initiate a determination operation of a specification of a cable for connecting the powered device according to the undervoltage warning .

In an exemplary embodiment, the apparatus further includes: a second reporting module configured to: after the determining operation of the specification of the cable for the powered device connection is initiated according to the undervoltage warning The instantaneous input voltage and the input current of the electrical device are reported to the network management to instruct the network management to adjust the voltage of the electrical device according to the instantaneous input voltage and the input current and/or perform system load reduction.

According to an embodiment of the present disclosure, there is also provided a computer readable storage medium storing computer executable instructions that, when executed by a processor, implement the methods described above.

Through the disclosure, after the instantaneous input voltage of the input electrical device is obtained by the alarm system of the electrical device, the number of times that the instantaneous input voltage of the input electrical device is lower than a preset voltage threshold is determined; when the number of times is greater than a predetermined threshold, the report is owed Press the alarm to the background management. The alarm system can timely understand the voltage status of the electrical equipment. Therefore, the problem that the existing electrical equipment does not have an undervoltage alarm can be solved, thereby achieving the effect of timely understanding the voltage condition of the electrical equipment.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

DRAWINGS

1 is a block diagram showing the hardware structure of a mobile terminal for an alarm method of a powered device according to an embodiment of the present disclosure;

2 is a flowchart of an alarm method of a powered device in accordance with an embodiment of the present disclosure;

3 is a schematic diagram of defining associations of units in an embodiment of the present disclosure;

4 is a flow chart of a method in an embodiment of the present disclosure;

FIG. 5 is a schematic diagram of an overall implementation of an embodiment of the present disclosure; FIG.

6 is a schematic diagram of instantaneous input voltage and current detection in an embodiment of the present disclosure;

7 is a structural block diagram of an alarm device for an electric device according to an embodiment of the present disclosure;

8 is a block diagram showing an exemplary structure of an alarm device for an electric device according to an embodiment of the present disclosure;

9 is a block diagram showing an exemplary structure of an alarm device for an electric device according to an embodiment of the present disclosure (2);

10 is a block diagram showing an exemplary structure of an alarm device for an electric device according to an embodiment of the present disclosure (3);

11 is a block diagram showing an exemplary structure of an alarm device for an electric device according to an embodiment of the present disclosure (4).

detailed description

The present disclosure will be described in detail below with reference to the drawings in conjunction with the embodiments.

The terms "first", "second" and the like in the specification and claims of the present disclosure and the above-mentioned figures are used to distinguish similar objects, and are not necessarily used to describe a particular order or order.

The method embodiments provided by the embodiments of the present disclosure may be executed in a mobile terminal, a computer terminal, or the like. Taking a mobile terminal as an example, FIG. 1 is a hardware structural block diagram of a mobile terminal for an alarm method of a powered device according to an embodiment of the present disclosure. As shown in FIG. 1, mobile terminal 10 may include one or more (only one shown in FIG. 1) processor 102 (processor 102 may include, but is not limited to, a processing device such as a microprocessor MCU or a programmable logic device FPGA. A memory 104 for storing data, and a transmission device 106 for communication functions. It will be understood by those skilled in the art that the structure shown in FIG. 1 is merely illustrative and does not limit the structure of the above electronic device. For example, the mobile terminal 10 may also include more or fewer components than those shown in FIG. 1, or have a different configuration than that shown in FIG.

The memory 104 can be used to store software programs and modules of the application software, such as the program instructions/modules corresponding to the alarm method of the powered device in the embodiment of the present disclosure, and the processor 102 runs the software program and the module stored in the memory 104, thereby The above methods are implemented by performing various functional applications and data processing. Memory 104 may include high speed random access memory, and may also include non-volatile memory such as one or more magnetic storage devices, flash memory, or other non-volatile solid state memory. In some examples, memory 104 may further include memory remotely located relative to processor 102, which may be connected to mobile terminal 10 over a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

Transmission device 106 is for receiving or transmitting data via a network. The above-described network specific example may include a wireless network provided by a communication provider of the mobile terminal 10. In one example, the transmission device 106 includes a Network Interface Controller (NIC) that can be connected to other network devices through a base station to communicate with the Internet. In one example, the transmission device 106 can be a Radio Frequency (RF) module for communicating with the Internet wirelessly.

In this embodiment, an alarm method for a powered device is provided. FIG. 2 is a flowchart of an alarm method for a powered device according to an embodiment of the present disclosure. As shown in FIG. 2, the flow includes the following steps:

Step S202, acquiring an instantaneous input voltage input to the electrical device;

Step S204, determining the number of times that the instantaneous input voltage input to the powered device is lower than a preset voltage threshold;

Step S206, reporting an undervoltage alarm when the number of times is greater than a predetermined threshold.

Through the above steps, after the instantaneous input voltage of the input electrical device is obtained by the alarm system of the electrical device, the number of times that the instantaneous input voltage of the input electrical device is lower than the preset voltage threshold is determined; when the number of times is greater than the predetermined threshold, the report is owed Press the alarm to the background management. The alarm system can timely understand the voltage status of the power equipment, and therefore, the problem that the existing power equipment has no undervoltage alarm can be solved, thereby achieving the effect of timely understanding the voltage condition of the power equipment.

The execution body of the above steps may be an alarm system, but is not limited thereto.

In an exemplary embodiment, before acquiring the instantaneous input voltage input to the powered device, the method further includes: determining predetermined information, wherein the predetermined information includes: a voltage of a power source for supplying power to the powered device, The maximum traffic power of the system, the operating voltage range of the power source, and the actual current input to the power device; calculating the impedance of the cable connecting the power source between the power source and the power device according to the predetermined information; determining the impedance of the cable according to the impedance of the cable The specifications of the above cables. In this embodiment, by determining the specification of the cable, the diagnosis of the power supply cable of the external field of the project is improved.

In an exemplary embodiment, after determining the specification of the cable according to the impedance of the cable, the method further includes: determining a lowest value of the instantaneous input voltage of the powered device; and according to the voltage of the power source and the instantaneous input The lowest value of the voltage determines the maximum voltage drop; the specification of the above cable is re-determined based on the maximum pressure drop described above. In this embodiment, the detection of the instantaneous input voltage is instantaneously measured by the power supply software in the alarm system.

In an exemplary embodiment, after the foregoing undervoltage alarm is reported when the number of times is greater than the predetermined threshold, the method further includes: determining, according to the undervoltage warning, a specification operation of a cable for connecting the power source to the power device. . In this embodiment, when the power device is running, the alarm system continues to detect the cable for the cable. When an undervoltage alarm occurs, the power device stops the cable configuration, or the cable is connected through the network management system in the background. Process it.

In an exemplary embodiment, after the determining operation of initiating the specification of the cable for connecting the power source to the powered device according to the undervoltage warning, the method further includes: inputting the instantaneous input voltage and the input current of the powered device The system is reported to the network management unit to instruct the network management unit to adjust the voltage of the electrical equipment and/or perform system load reduction according to the instantaneous input voltage and the input current. In this embodiment, the alarm system reports the undervoltage alarm, the instantaneous input voltage, and the input current to the network management. The network management adjusts the voltage of the electrical equipment according to the undervoltage alarm, the instantaneous input voltage, and the input current, and/or performs system load reduction. . Through the instantaneous input voltage and current detection and reporting to the network management, the effective control of the power supply system by the network management is improved, the operational reliability of the power supply system and the effective determination of the fault are improved, and the cost of troubleshooting and repair is reduced.

The present disclosure is described in detail below with reference to specific examples:

Specific example 1:

The purpose of the following specific examples is to improve the diagnosis of the power supply cable in the field of the project and to improve the effective control of the power supply system by the instantaneous input voltage (corresponding to the input voltage), current detection and reporting to the network management system, and improve the operational reliability and fault of the power supply system. Effective judgment to reduce the cost of troubleshooting and repair.

To achieve the above objectives, this specific example adopts the following scheme:

1) The power supply software in the alarm system realizes the detection of instantaneous input voltage and input current and the function reported to the network management, wherein the voltage detection is divided into average voltage detection and real-time voltage detection;

2) The voltage detection of the power supply has the function of power loop voltage drop compensation, compensating for the voltage drop between the power input terminal and the monitoring point and the detection point and the internal power conversion voltage. Because the power supply can adapt to the instantaneous input voltage range depends on the power conversion circuit.

3) The power supply software can pass the power supply voltage range (corresponding to the source voltage provided by the engineering installation site (corresponding to the voltage of the above power supply) and the maximum traffic required by the alarm system (corresponding to the maximum service power of the above system). The operating voltage range of the above power supply, the actual current detection result (corresponding to the actual current of the above-mentioned electrical equipment) to calculate the impedance of the cable, and determine whether the cable can be matched by the impedance of the cable and the voltage range of the power supply. Meet the system's maximum business and distance. When the system is first started, the system uses the above method to check the configuration of the cable. It can be executed after normal operation.

4) The power software reports an undervoltage alarm to the network management system. The network management determines whether the fault is caused by the undervoltage of the power supply and triggers the cable configuration check.

5) The power supply software reports the instantaneous input voltage and current to the network management. The network management determines whether the power supply is to be measured and the power voltage is adjusted, or the system is downloaded.

The functional units involved include: voltage, current detecting unit, information processing unit, alarm signal generating unit, alarm signal and voltage current reporting unit, and background network management unit.

The instantaneous input voltage and current signal are obtained through the hardware circuit, and the processing of the single chip forms the average voltage current and the instantaneous voltage current. The minimum voltage threshold is set by the power supply software to obtain the quantity below the minimum voltage threshold within a certain period of time, according to the set quantity value. Determine if an undervoltage alarm is to be issued.

FIG. 3 is a schematic diagram of defining the association of each unit in the specific example, and the specific implementation includes the following steps:

The first step: through the hardware detection circuit, complete the voltage and current monitoring, voltage and current detection using instantaneous detection, using the commonly used built-in processing function of the detection chip, as shown in Figure 5, Figure 6.

In the second step, the system notifies the power supply to calculate the cable impedance. The system sends the voltage of the power distribution cabinet to the power supply. The power supply performs impedance calculation according to the lowest instantaneous value detected by the power supply, sends the information to the system, and determines the cable specifications.

Step 3: The system determines whether the cable is reasonable according to the reported impedance value and determines the appropriate cable. Not suitable for replacement, suitable to continue.

Step 4: After the system enters the working state, the system is fully loaded. The system notifies the power supply to monitor the instantaneous input voltage, records the lowest value of the instantaneous voltage, and reports it to the system. The system determines the maximum voltage drop according to the source voltage. According to the value, the network management determines the power-down point. The system is configured.

In the fifth step, the power supply resumes normal operation, and the calculation of impedance and the like is no longer performed, thereby reducing the task overhead.

Step 6: After the system is turned into normal operation, the power supply monitors the instantaneous input voltage status in real time and reports it to the system. The input undervoltage alarm is judged, and the instantaneous value is judged.

In the seventh step, if an input undervoltage alarm occurs, after the system receives the alarm, the system triggers the impedance judgment and the power-down point configuration again, and performs the second, third, fourth, and fifth steps.

Concrete example 2:

RRU system input distance, input cable configuration, RRU system internal power supply input input undervoltage alarm threshold is 37V, Frequency Division Duplexing (FDD) standard, load stability.

When the system is fully loaded, the output voltage of the power distribution cabinet is 53.5V. The power supply detects and reports the instantaneous input voltage of 50V. The system calculates the voltage drop to 3.5V, calculates the impedance, exceeds the expected voltage drop, and recalculates the cable specifications.

After normal operation, the RRU instantaneous input voltage is less than 37V, and the number of consecutive judgments exceeds 50 times. It is judged as an input undervoltage alarm. The communication protocol is reported as an RRU system through an Inter-Integrated Circuit (IIC) protocol. The system restarts cable configuration detection, resets the power-down point of the power distribution cabinet system, and calculates according to the voltage drop + the lowest input voltage.

4 is a flowchart of a method in this specific example. As shown in FIG. 4, the specific implementation steps of the foregoing method are as follows:

Step 401: start;

Step 402: Whether the number of power supply judgments is less than an undervoltage alarm threshold;

Step 403: When the number of power supply judgments is less than the undervoltage alarm threshold, the undervoltage alarm is reported;

Step 404: Reporting the maximum and minimum values of the input voltage;

Step 405: Determine whether the minimum value of the input voltage is lower than the value of the lowest input voltage of the module;

Step 406: When the minimum value of the input voltage is not lower than the value of the lowest input voltage of the module, set the power supply protection point to the original protection point +u (u=V2 minimum value -V1);

Step 407: When the input voltage minimum value is lower than the minimum input voltage of the module, the power supply once-off protection point is set to the original protection point +u (u=the module minimum input voltage -V1);

Step 408: End.

Concrete example 3:

An RRU system, system input distance, input cable configuration, RRU system internal power setting input undervoltage alarm threshold is 37V, Time Division Duplexing (TDD) standard, load dynamic. When the system is fully loaded, the output voltage of the power distribution cabinet is 53.5V. The power supply detects and reports the instantaneous input voltage to 50V. The lowest point is captured. The system calculates the voltage drop to 3.5V, calculates the impedance, exceeds the expected voltage drop, and recalculates the cable. specification.

After the normal operation, the instantaneous input voltage is less than 37V, and the number of judgments in the fixed period exceeds 50 times. It is judged as the input undervoltage alarm, reported to the RRU system through the IIC communication protocol, and the system restarts the cable configuration detection. Reset the power-down point and calculate according to the voltage drop + the lowest input voltage.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is The commonly used embodiment. Based on this understanding, the solution of the present disclosure may be embodied in the form of a software product stored in a storage medium (such as a ROM/RAM, a magnetic disk, an optical disk), and includes a plurality of instructions for making one The terminal device (which may be a cell phone, computer, server, or network device, etc.) performs the methods described in various embodiments of the present disclosure.

An alarm device for a powered device is also provided in the embodiment, and the device is used to implement the foregoing embodiments and exemplary embodiments, and details are not described herein. As used hereinafter, the term "module" may implement a combination of software and/or hardware of a predetermined function. Although the devices described in the following embodiments are typically implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.

7 is a structural block diagram of an alarm device for an electric device according to an embodiment of the present disclosure. As shown in FIG. 7, the device includes: an acquisition module 72, a first determination module 74, and a first reporting module 76. Detailed instructions:

The obtaining module 72 is configured to obtain an instantaneous input voltage input to the powered device. The first determining module 74 is connected to the obtaining module 72, and is configured to determine that the instantaneous input voltage input to the powered device is lower than a preset voltage threshold. The first reporting module 76 is connected to the first determining module 74, and is configured to report an undervoltage alarm when the number of times is greater than a predetermined threshold.

In an exemplary embodiment, FIG. 8 is a block diagram (1) of an exemplary structure of an alarm device for an electric device according to an embodiment of the present disclosure. As shown in FIG. 8, the device further includes: a second determining module 82, calculating Module 84 and third determining module 86, the device is described in detail below:

The second determining module 82 is configured to determine predetermined information before acquiring the instantaneous input voltage input to the powered device, wherein the predetermined information comprises: a voltage of a power source for supplying power to the power device, and a maximum service power of the system. The working voltage range of the power source and the actual current input to the power device; the calculating module 84 is connected to the second determining module 82, and configured to calculate a cable connecting the power source and the power device according to the predetermined information. The third determining module 86 is connected to the calculating module 84 and configured to determine the specification of the cable according to the impedance of the cable.

In an exemplary embodiment, FIG. 9 is a block diagram showing an exemplary structure of an alarm device for an electric device according to an embodiment of the present disclosure. As shown in FIG. 9, the device further includes: a fourth determining module 92, The fifth determining module 94 and the sixth determining module 96 are described in detail below:

The fourth determining module 92 is configured to determine a minimum value of the instantaneous input voltage of the powered device after determining the specification of the cable according to the impedance of the cable; and the fifth determining module 94 is connected to the fourth determining module 92. And determining to determine a maximum voltage drop according to the voltage of the power source and the instantaneous minimum value; the sixth determining module 96 is connected to the fifth determining module 94, and is configured to re-determine the specification of the cable according to the maximum voltage drop.

In an exemplary embodiment, FIG. 10 is a block diagram (3) of an exemplary structure of an alarm device for an electric device according to an embodiment of the present disclosure. As shown in FIG. 10, the device further includes: a seventh determining module 1002, Detailed description of the device:

The seventh determining module 1002 is configured to, after the reporting of the undervoltage alarm, initiate a determination operation of the specification of the cable connected to the powered device according to the undervoltage warning.

In an exemplary embodiment, FIG. 11 is a block diagram showing an exemplary structure of an alarm device for an electric device according to an embodiment of the present disclosure. As shown in FIG. 11, the device further includes a second reporting module 1102. The device is described in detail below:

The second reporting module 1102 is configured to report the instantaneous input voltage and the input current of the powered device to the network management device after the determining operation for starting the specification of the cable for connecting the electrical device according to the undervoltage warning. The network management adjusts the voltage of the electrical equipment and/or performs system load reduction according to the instantaneous input voltage and the input current.

The above modules may be implemented by software or hardware. For the latter, the foregoing may be implemented by, but not limited to, the above modules are all located in the same processor; or, the above modules are respectively located in different combinations. In the processor.

Embodiments of the present disclosure also propose a computer readable storage medium storing computer executable instructions that, when executed by a processor, implement the methods described above.

In this embodiment, the foregoing storage medium may include, but is not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, and a magnetic memory. A variety of media that can store program code, such as a disc or a disc.

In this embodiment, the processor may perform the above steps according to the stored program code in the storage medium.

For specific examples in this embodiment, reference may be made to the examples described in the foregoing embodiments and exemplary embodiments, and details are not described herein again.

Those of ordinary skill in the art will appreciate that all or some of the steps, systems, and functional blocks/units of the methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be composed of several physical The components work together. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on a computer readable medium, which may include computer storage media (or non-transitory media) and communication media (or transitory media). As is well known to those of ordinary skill in the art, the term computer storage medium includes volatile and nonvolatile, implemented in any method or technology for storing information, such as computer readable instructions, data structures, program modules or other data. Sex, removable and non-removable media. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridge, magnetic tape, magnetic disk storage or other magnetic storage device, or may Any other medium used to store the desired information and that can be accessed by the computer. Moreover, it is well known to those skilled in the art that communication media typically includes computer readable instructions, data structures, program modules, or other data in a modulated data signal, such as a carrier wave or other transport mechanism, and can include any information delivery media. .

The above description is only exemplary embodiments of the present disclosure, and is not intended to limit the disclosure, and various changes and modifications may be made to the present disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and scope of the present disclosure are intended to be included within the scope of the present disclosure.

Industrial applicability

Claims

An alarm method for a powered device, comprising:

Obtaining an instantaneous input voltage input to the powered device;

Determining the number of times that the instantaneous input voltage input to the powered device is lower than a preset voltage threshold;

The undervoltage alarm is reported when the number of times is greater than a predetermined threshold.
The method of claim 1, wherein before the obtaining the instantaneous input voltage input to the powered device, the method further comprises:

Determining predetermined information, wherein the predetermined information includes: a voltage of a power source for powering the powered device, a system maximum traffic power, an operating voltage range of the power source, and an actual current input to the powered device;

Calculating an impedance of a connection cable between the power source and the powered device according to the predetermined information;

The specification of the cable is determined according to the impedance of the cable.
The method of claim 2, wherein after determining the specification of the cable according to the impedance of the cable, the method further comprises:

Determining a minimum value of the instantaneous input voltage of the powered device;

Determining a maximum voltage drop according to a voltage of the power source and a lowest value of the instantaneous input voltage;

The specification of the cable is re-determined based on the maximum pressure drop.
The method of claim 1, wherein after the reporting the undervoltage alarm by the number of times greater than the predetermined threshold, the method further comprises:

Determining an operation of a cable specification for connection of the powered device according to the undervoltage alarm.
The method of claim 4, wherein after the determining operation of the cable specification for the electrical device connection is initiated according to the undervoltage alarm, the method further comprises:

The instantaneous input voltage and the input current of the electrical device are reported to the network management device to instruct the network management to adjust the voltage of the electrical device according to the instantaneous input voltage and the input current, or perform system load reduction, or The voltage of the electrical device is adjusted and the system is down-loaded.
An alarm device for an electrical device, comprising:

Obtaining a module, configured to obtain an instantaneous input voltage input to the powered device;

a first determining module, configured to determine a number of times that the instantaneous input voltage input to the powered device is lower than a preset voltage threshold;

The first reporting module is configured to report an undervoltage alarm when the number of times is greater than a predetermined threshold.
The apparatus of claim 6 wherein said apparatus further comprises:

a second determining module, configured to determine predetermined information before acquiring the instantaneous input voltage input to the powered device, wherein the predetermined information comprises: a voltage, a system for supplying power to the powered device Maximum traffic power, an operating voltage range of the power source, and an actual current input to the powered device;

a calculating module, configured to calculate an impedance of a cable connecting the power source and the power device according to the predetermined information;

The third determining module is configured to determine a specification of the cable according to an impedance of the cable.
The apparatus of claim 7 wherein said apparatus further comprises:

a fourth determining module, configured to determine a minimum value of the instantaneous input voltage of the powered device after determining the specification of the cable according to the impedance of the cable;

a fifth determining module, configured to determine a maximum voltage drop according to a voltage of the power source and a lowest value of the instantaneous input voltage;

And a sixth determining module configured to re-determine the specification of the cable according to the maximum voltage drop.
The apparatus of claim 6 wherein said apparatus further comprises:

And a seventh determining module, configured to, after the undervoltage alarm is reported, initiate a determination operation of a specification of a cable connected to the powered device according to the undervoltage warning.
The apparatus of claim 9 wherein said apparatus further comprises:

The second reporting module is configured to report the instantaneous input voltage and the input current of the powered device to the network management device after the determining operation of the cable specification for the electrical device connection is started according to the undervoltage warning Instructing the network management to adjust the voltage of the electrical equipment according to the instantaneous input voltage and the input current, or perform system load reduction, or adjust the voltage of the electrical equipment and perform system load reduction.
A computer readable storage medium storing computer executable instructions that, when executed by a processor, implement the method of any of claims 1-5.