TWI744836B - System and method for monitoring current - Google Patents

Abstract

A system for monitoring current flowing through a distribution board. The current monitoring system includes a monitoring unit arranged on the distribution board. The monitoring unit monitors the current flowing through the distribution board and outputting a current signal. The current monitoring system also includes an electronic device. The electronic device is electrically connected to the monitoring unit. The electronic device receives the current signal output by the monitoring unit. According to the current signal, the electronic device further analysis and display three-phase current information flowing through the distribution board. A current monitoring method is also provided.

Description

Current monitoring system and method

The invention relates to a current monitoring system and method.

Generally, an ammeter is connected to the switchboard in the computer room to display information about the current flowing through the switchboard. In this way, the current information displayed by the ammeter can be used to determine whether the current flowing through the switchboard is overloaded. If it is overloaded, manually control the circuit breaker of the switchboard to cut off the power, thereby reducing the current flowing through the switchboard. However, the above method requires technicians to stay in the computer room at all times, and the labor cost is relatively high.

In view of the above, it is necessary to provide a current monitoring system and method that is convenient and can monitor the current in real time.

A current monitoring system is used to monitor the current flowing through a switchboard. The current monitoring system includes: a monitoring unit arranged in the switchboard to monitor the current flowing through the switchboard and output a current signal And electronic equipment, the electronic equipment is electrically connected to the monitoring unit to receive the current signal output by the monitoring unit, and filter out the three-phase current information flowing through the switchboard according to the current signal analysis, and Display the three-phase current information.

Preferably, the current monitoring system further includes a receiver electrically connected to the switchboard and the electronic device, and the receiver is used to transmit the current signal output by the monitoring unit to the electronic device.

Preferably, the electronic device includes a processing unit and a display unit, and the processing The unit is electrically connected to the display unit, the processing unit is electrically connected to the receiver, and the processing unit is used to receive the current signal transmitted by the receiver, analyze and filter, and output three-phase current information to the receiver. The display unit displays the three-phase current information.

Preferably, the three-phase current information includes three-phase current values, the maximum current value of the three-phase current values is displayed, and the displayed maximum current value is used to determine whether the three-phase current value flowing through the switchboard is overloaded .

Preferably, when the maximum current value of the three-phase current value is within a first preset range, the processing unit determines that the current flowing through the switchboard is within a normal range, and sends a first control signal to the display unit , So that the maximum current value displays the first color.

When the maximum current value among the three-phase current values is within a second preset range, the processing unit determines that the current flowing through the switchboard is within the adjacent overload range, and sends a second control signal to the display unit, So that the maximum current value displays the second color.

And when the maximum current value of the three-phase current values is greater than the maximum value of the second preset range, the processing unit determines that the current flowing through the switchboard is in an overload state to send a third control signal to all The display unit is configured to make the maximum current value display a third color, and then determine whether the three-phase current value flowing through the switchboard is overloaded by the color displayed by the maximum current value.

Preferably, the three-phase current information further includes the number of the switchboard, and when the three-phase current information displayed by the display unit is overloaded, the location of the overloaded switchboard is correspondingly determined according to the number of the switchboard.

Preferably, the electronic device further includes a notification unit that is electrically connected to the processing unit, and the notification unit is used when the processing unit determines that the maximum current value of the switchboard is greater than the second preset range The maximum value, that is, when it is determined that the current flowing through the switchboard is overloaded, the notification signal output by the processing unit and the three-phase current of the overloaded switchboard are received News.

A current monitoring method is used to monitor the current flowing through the switchboard. The method includes the following steps: monitoring the current flowing through the switchboard and outputting a current signal.

Receive current signal and analyze and filter out three-phase current information.

And display the three-phase current information.

Preferably, the method further comprises: judging whether the current flowing through the switchboard is overloaded according to the three-phase current information; after judging that the current flowing through the switchboard is overloaded, notifying the corresponding switchboard to be overloaded and powering off the switchboard .

Preferably, the displayed three-phase current information includes three-phase current values, and the maximum current value of the three-phase current values is displayed, and the displayed maximum current value is used to determine the three-phase current value flowing through the switchboard Whether it is overloaded.

Preferably, when the maximum current value of the three-phase current value is within the first preset range, it is determined that the current flowing through the switchboard is within the normal range, and the first control signal is sent to the display unit, so that all The maximum current value is displayed in the first color.

When the maximum current value among the three-phase current values is within the second preset range, it is determined that the current flowing through the switchboard is within the adjacent overload range, and a second control signal is sent to the display unit to make the The maximum current value shows the second color.

And when the maximum current value among the three-phase current values is greater than the maximum value of the second preset range, determining that the current flowing through the switchboard is in an overload state, so as to send a third control signal to the display unit, So that the maximum current value displays the third color, and the color displayed by the maximum current value is used to determine whether the three-phase current value flowing through the switchboard is overloaded.

By monitoring the three-phase current information displayed by the electronic equipment, the present invention can achieve real-time monitoring of the current flowing through the switchboard, avoiding the delay in monitoring the switchboard. Health complete power failure or trip.

100: Current monitoring system

10: Monitoring unit

20: receiver

30: electronic equipment

31: Processing Unit

32: display unit

33: Notification unit

200: switchboard

201: Circuit Breaker

300: power distribution unit

400: server

Fig. 1 is a functional block diagram of a current monitoring system in a preferred embodiment of the present invention.

FIG. 2 is a schematic diagram of three-phase current information displayed by electronic equipment in the current monitoring system shown in FIG. 1. FIG.

Fig. 3 is a flowchart of a current monitoring method in a preferred embodiment of the present invention.

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those with ordinary knowledge in the field without creative work shall fall within the protection scope of the present invention.

It should be noted that when an element is referred to as being "electrically connected" to another element, it can be directly on the other element or a central element may also be present. When an element is considered to be "electrically connected" to another element, it can be a contact connection, for example, a wire connection or a non-contact connection, for example, a non-contact coupling.

Unless otherwise defined, all technical and scientific terms used in this article have the same meanings commonly understood by those with ordinary knowledge in the field. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the case of no conflict, the following embodiments and the features in the embodiments can be combined with each other.

Please refer to FIG. 1, the present invention provides a current monitoring system 100 for The current of the switchboard 200 is monitored. The current monitoring system 100 includes a monitoring unit 10, a receiver 20 and an electronic device 30. The monitoring unit 10 is disposed in the switchboard 200 to monitor the current flowing through the switchboard 200 and output a current signal. The receiver 20 is electrically connected to the monitoring unit 10 and the electronic device 30 for transmitting the current signal output by the monitoring unit 10 to the electronic device 30. The electronic device 30 is used for receiving the current signal, and analyzing and filtering out the three-phase current information flowing through the switchboard 200 according to the current signal analysis. In this way, it can be determined whether the current flowing through the switchboard 200 is overloaded according to the three-phase current information.

In this embodiment, a plurality of circuit breakers 201 are provided in the switchboard 200. In this embodiment, the circuit breaker 201 may be a single-pole single-throw switch. Each circuit breaker 201 can be electrically connected to the corresponding server 400 through a power distribution unit 300 (PDU). When the circuit breaker 201 is closed, the switchboard 200 can distribute the current to the server 400 through the power distribution unit 300 through the closed circuit breaker 201, so that the server 400 can work normally. When the current flowing through the switchboard 200 is too large, for example, beyond the range that the switchboard 200 can withstand, that is, when the current flowing through the switchboard 200 is overloaded, all the circuit breakers 201 in the switchboard 200 in the prior art will be broken. This will cause all servers 400 to fail to work normally. In this way, in this embodiment, at least one of all the circuit breakers 201 can be disconnected, thereby avoiding excessive current flowing through the switchboard 200 and causing damage to the switchboard 200, thereby preventing the normal operation of other servers 400 from being affected.

In this embodiment, the number of the switchboard 200 is plural. The plurality of distribution boards 200 may be connected in series with the receiver 20 through a serial communication protocol. The monitoring unit 10 in each switchboard 200 transmits the current signal carrying the number of the switchboard 200 to the electronic device 30 through the receiver 20. In this embodiment, the receiver 20 may be a serial communication protocol converter.

The electronic device 30 includes a processing unit 31 and a display unit 32.

The processing unit 31 is electrically connected to the receiver 20. The processing unit 31 is configured to receive the current signal transmitted by the receiver 20 and perform analysis and screening, and then output three-phase current information to the display unit 32. Specifically, the processing unit 31 may be a central processing unit (CPU).

The display unit 32 is electrically connected to the processing unit 31. The display unit 32 is used to receive and display the three-phase current information output by the processing unit 31.

Understandably, please refer to FIG. 2 together. In this embodiment, the three-phase current information includes three-phase current values. Among them, in this embodiment, the three-phase currents are three groups of alternating currents with the same amplitude and the same frequency, but with a phase difference of 120°. In this embodiment, the three-phase current values are defined as the first phase current value R, the second phase current value S, and the third phase current value T, respectively. Therefore, the three-phase current information displayed by the display unit 32 includes R-phase, S-phase, and T-phase current values. The display unit 32 is also used to separately display the maximum current values in the R-phase, S-phase and T-phase. In this way, it can be judged whether the three-phase current value is overloaded by the maximum current value displayed separately.

For example, when the maximum current value among the three-phase current values is in the first preset range, for example, less than 47 amperes (A), the processing unit 31 may determine that the current flowing through the switchboard 200 is within the normal range, And send a first control signal to the display unit 32, so that the maximum current value displays the first color.

When the maximum current value among the three-phase current values is within the second preset range, for example, between 48A and 62A, that is, greater than 48A and less than 62A, the processing unit 31 may determine that the current flowing through the switchboard 200 The current is in the near overload range, and a second control signal is sent to the display unit 32 so that the maximum current value displays the second color.

When the maximum current value among the three-phase current values is greater than the maximum value of the second preset range, for example, greater than 63A, the processing unit 31 determines that the current flowing through the switchboard 200 is in an overload state, and sends a first Three control signals are given to the display unit 32 to make the most The high current value displays the third color.

It can be understood that, in this embodiment, the maximum value of the second preset range value may be, but is not limited to, 85% of the maximum current value that can be withstood through the switchboard 200.

In this way, the processing unit 31 can determine whether the current flowing through the switchboard 200 is overloaded according to the displayed maximum current value. For example, when the color displayed by the maximum current value is the third color, it is determined that the current flowing through the switchboard 200 is overloaded. For another example, when the color displayed by the maximum current value is the first color or the second color, it is determined that the current flowing through the switchboard 200 is not overloaded.

In one of the embodiments, the first color may be green, the second color may be yellow, and the third color may be red. Of course, in other embodiments, the first color, the second color, and the third color can be set or adjusted according to specific requirements.

Please refer to FIG. 2 again. In this embodiment, the three-phase current information also includes the number of the switchboard 200. For example, the number of the switchboard 200 may be NO-01,...NO-n. In this embodiment, for example, the maximum current value of the switchboard 200 numbered NO-01 is 25.7674 A, and the maximum current value is in the first preset range, that is, less than 47 amperes (A). In this way, the maximum current value displays the first color, and it can be determined that the switchboard 200 numbered NO-01 is not overloaded.

It can be understood that, in this embodiment, the display unit 32 can also display the three-phase current information of the plurality of switchboards 200 at the same time. In this way, the three-phase current information of the multiple switchboards 200 can be directly monitored through the display unit 32, and then it can be quickly determined whether the current of the corresponding switchboard 200 is overloaded. For example, in this embodiment, when the maximum current value displayed by the display unit 32 displays the third color, according to the displayed third color and the number of the corresponding switchboard 200, the position of the overloaded switchboard 200 can be determined, and then the position of the overloaded switchboard 200 can be determined. It is convenient to control the power off of some circuit breakers 201 in the overloaded switchboard 200. For example, the maximum power of the switchboard 200 numbered NO-n on the right in Figure 2 The current value is 64.9978A, and the maximum current value is greater than the maximum value of the second preset range, that is, greater than 63A. In this way, when the maximum current value displays the third color, it can be determined that the switchboard 200 with the number NO-n is overloaded.

In this embodiment, referring to FIG. 1 again, the electronic device 30 further includes a notification unit 33. The notification unit 33 is electrically connected to the processing unit 31. The notification unit 33 is configured to receive the processing unit when the processing unit 31 determines that the maximum current value of the switchboard 200 is greater than the maximum value of the second preset range, that is, when it determines that the current flowing through the switchboard 200 is overloaded The notification signal output by 31 and the three-phase current information of the overloaded switchboard 200.

After the notification unit 33 receives the corresponding notification signal and the three-phase current information, it can send the received three-phase current information to relevant personnel to notify that the switchboard 200 is overloaded.

In this embodiment, the display unit 32 can also be refreshed every predetermined time under the control of the processing unit 31, so as to display the latest three-phase current information in real time. In this embodiment, the preset time may be set to no more than 10 minutes.

It can be understood that, in this embodiment, the display unit 32 may also display the time of the most recent refresh under the control of the processing unit 31.

In this embodiment, when the processing unit 31 sends the three-phase current information to the display unit 32, it can also store the three-phase current information through the corresponding storage unit, so as to facilitate the evaluation of the current of each switchboard 200. Statistics and analysis of data. For example, analyzing the electricity consumption per hour, daily current data, monthly electricity consumption, and annual electricity consumption analysis of the switchboard 200.

Please refer to FIG. 3 again. This application also discloses a current monitoring method for judging whether the current flowing through the switchboard 200 is overloaded. It can be understood that according to different requirements, the order of the steps in the flowchart can be changed, and some steps can be omitted.

Step S31, monitoring the current flowing through the switchboard 200 by the monitoring unit 10, And output current signal.

Specifically, the monitoring unit 10 is arranged in the switchboard 200 to monitor the current flowing through the switchboard 200 and output a current signal.

It can be understood that, in this embodiment, the number of the switchboard 200 is plural. The plurality of switchboards 200 can be connected in series with the receiver 20 through a serial communication protocol. The monitoring unit 10 in each switchboard 200 outputs the current signal carrying the number of the switchboard 200 through the receiver 20. In this embodiment, the receiver 20 may be a serial communication protocol converter.

In step S32, the electronic device 30 receives the current signal and analyzes and filters out the three-phase current information.

Specifically, the electronic device 30 receives the current signal. The electronic device 30 includes a processing unit 31 and a display unit 32. The processing unit 31 is electrically connected to the display unit 32. The processing unit 31 receives the current signal and analyzes and filters out three-phase current information based on the current signal.

In step S33, the three-phase current information is displayed by the display unit 32.

In this embodiment, after the processing unit 31 filters out the three-phase current information, it transmits the three-phase current information to the display unit 32. In this way, it can be determined whether the current flowing through the switchboard 200 is overloaded according to the three-phase current information.

Specifically, the three-phase current information includes the serial number of the switchboard 200 and the three-phase current value. Among them, in this embodiment, the three-phase currents are three groups of alternating currents with the same amplitude and the same frequency, but with a phase difference of 120°. In this embodiment, the three-phase current values are defined as the first phase current value R, the second phase current value S, and the third phase current value T, respectively. Therefore, the three-phase current information displayed by the display unit 32 includes R-phase, S-phase, and T-phase current values. The display unit 32 is also used to separately display the maximum current values in the R-phase, S-phase and T-phase.

In step S34, the processing unit 31 determines whether the current flowing through the switchboard 200 is overloaded.

It can be understood that the processing unit 31 is further configured to determine whether the three-phase current value is overloaded according to the maximum current value, and correspondingly send a control signal to the display unit 32. For example, when the maximum current value among the three-phase current values is in the first preset range, for example, less than 47 amperes (A), the processing unit 31 may determine that the current flowing through the switchboard 200 is within the normal range, And send a first control signal to the display unit 32, so that the maximum current value output by the display unit 32 displays the first color.

When the maximum current value among the three-phase current values is within a second preset range, for example, between 48A and 62A, that is, greater than 48A and less than 62A, the processing unit 31 may determine that the current flowing through the switchboard 200 The current is in the near overload range, and a second control signal is sent to the display unit 32, so that the maximum current value output by the display unit 32 displays the second color.

When the maximum current value among the three-phase current values is greater than the maximum value of the second preset range, for example, greater than 63A, the processing unit 31 determines that the current flowing through the switchboard 200 is in an overload state, and sends a first Three control signals are given to the display unit 32 so that the maximum current value output by the display unit 32 displays the third color.

It can be understood that, in this embodiment, the maximum value of the second preset range value may be, but is not limited to, 85% of the maximum current value that can be withstood through the switchboard 200.

In this embodiment, the display unit 32 displays the three-phase current information. The switchboard 200 is plural, and the display unit 32 can also display the three-phase current information of the plural switchboards 200 at the same time. In this way, the three-phase current information of the multiple switchboards 200 can be directly monitored through the display unit 32, and then it can be quickly determined whether the current of the corresponding switchboard 200 is overloaded.

Specifically, according to whether the color of the maximum current value displayed by the display unit 32 is For the third color, it is determined whether the current flowing through the switchboard 200 is overloaded. When the display is the third color, that is, it is determined that the current flowing through the switchboard 200 is overloaded, and step S35 is executed. When the display is in the first color or the second color, it is determined that the current flowing through the switchboard 200 is not overloaded, and the process returns to step S32, that is, the processing unit 31 receives the current signal again and analyzes and filters out the three-phase current information.

In step S35, the corresponding switchboard 200 is notified that the switchboard 200 is overloaded and the switchboard 200 is powered off.

In this embodiment, a plurality of circuit breakers 201 are provided in the switchboard 200. When it is determined that the current flowing through the switchboard 200 is overloaded, the position of the switchboard 200 is determined according to the number of the switchboard 200, and at least one of all the circuit breakers 201 in the corresponding switchboard 200 can be disconnected to avoid flowing through The current corresponding to the switchboard 200 is too large, which causes the switchboard 200 to be damaged, so as to avoid affecting the normal operation of other servers 400. Then, the current flowing through the switchboard 200 is re-monitored within a preset time, that is, returning to step S31.

By monitoring the three-phase current information displayed by the electronic device 30, the present invention can achieve real-time monitoring of the current flowing through the switchboard 200, without the need to monitor the power consumption of the computer room in the computer room, thus saving labor costs. It also avoids problems such as a complete power failure or tripping of the switchboard 200 due to untimely monitoring. It can be understood that judging whether the current flowing through the switchboard 200 is overloaded according to the displayed three-phase current information is more intuitive and more convenient to use.

The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the above preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced. None should deviate from the spirit and scope of the technical solution of the present invention. Those skilled in the art can also make other changes within the spirit of the present invention and apply them to the design of the present invention, as long as they do not deviate from the technical effects of the present invention. These changes made in accordance with the spirit of the present invention should all be included in the scope of protection claimed by the present invention.

100: Current monitoring system

10: Monitoring unit

20: receiver

30: electronic equipment

31: Processing Unit

32: display unit

33: Notification unit

200: switchboard

201: Circuit Breaker

300: power distribution unit

400: server

Claims (10)

A current monitoring system, which is improved in that the current monitoring system includes: a plurality of switchboards, the plurality of the switchboards are connected in series through a serial communication protocol; a plurality of monitoring units, the plurality of monitoring units are respectively arranged in the switchboard, to be used separately Monitoring the current flowing through the switchboard and outputting a current signal; a receiver, the receiver is electrically connected to a plurality of the switchboards connected in series for receiving the current signal, and the receiver is a serial communication protocol converter; And an electronic device, the electronic device is electrically connected to the receiver for receiving a plurality of current signals output by the monitoring unit, and analyzing and filtering out the three-phase current information flowing through the switchboard according to the current signal analysis, and Display the three-phase current information. The current monitoring system according to claim 1, wherein the electronic device includes a processing unit and a display unit, the processing unit is electrically connected to the display unit, the processing unit is electrically connected to the receiver, and the processing unit The unit is used to receive the current signal transmitted by the receiver, analyze and filter, and output three-phase current information to the display unit, and the display unit displays the three-phase current information. The current monitoring system according to claim 2, wherein the three-phase current information includes three-phase current values, and the maximum current value of the three-phase current values is displayed, and the displayed maximum current value is used to determine the flow through State whether the three-phase current value of the switchboard is overloaded. The current monitoring system according to claim 3, wherein when the maximum current value of the three-phase current value is within the first preset range, the processing unit determines that the current flowing through the switchboard is within the normal range, and sends The first control signal is sent to the display unit so that the maximum current value displays the first color; when the maximum current value among the three-phase current values is within a second preset range, the processing unit The element judges that the current flowing through the switchboard is within the immediate overload range, and sends a second control signal to the display unit so that the maximum current value displays the second color; and when the maximum current value of the three-phase current value is When the current value is greater than the maximum value of the second preset range, the processing unit determines that the current flowing through the switchboard is in an overload state, and sends a third control signal to the display unit to make the maximum current value The third color is displayed, and the color of the maximum current value is used to determine whether the three-phase current value flowing through the switchboard is overloaded. The current monitoring system according to claim 3, wherein the three-phase current information further includes the number of the switchboard, and when the three-phase current information displayed by the display unit is overloaded, the overload is determined according to the number of the switchboard The location of the switchboard. The current monitoring system according to claim 4, wherein the electronic device further includes a notification unit, the notification unit is electrically connected to the processing unit, and the notification unit is used when the processing unit determines the maximum current value of the switchboard It is greater than the maximum value of the second preset range, that is, when it is determined that the current flowing through the switchboard is overloaded, the notification signal output by the processing unit and the three-phase current information of the overloaded switchboard are received. A current monitoring method, which is improved in that the method includes the following steps: a plurality of switchboards are connected in series through a serial communication protocol; monitoring units arranged in the switchboard respectively monitor the current flowing through the plurality of switchboards and output current signals; receiving; The device is electrically connected to the plurality of the power distribution boards connected in series to receive the current signal, the receiver is a serial communication protocol converter; the electronic device is electrically connected to the receiver, and is used to receive the plurality of the monitoring units The output current signal is analyzed and filtered to obtain the three-phase current information; and the three-phase current information is displayed. The current monitoring method according to claim 7, wherein the method further comprises: judging whether the current flowing through the switchboard is overloaded according to the three-phase current information; when it is judged that the current flowing through the switchboard is overloaded, notifying the corresponding The switchboard is overloaded and the switchboard is powered off. The current monitoring method according to claim 8, wherein the displayed three-phase current information includes three-phase current values, and the maximum current value of the three-phase current values is displayed, and the current is judged by the displayed maximum current value Whether the three-phase current value through the switchboard is overloaded. The current monitoring method according to claim 9, wherein when the maximum current value of the three-phase current value is within a first preset range, it is determined that the current flowing through the switchboard is within the normal range, and the first control signal is issued To the display unit, so that the maximum current value displays the first color; when the maximum current value among the three-phase current values is within a second preset range, it is determined that the current flowing through the switchboard is in the near overload range And send a second control signal to the display unit, so that the maximum current value displays the second color; and when the maximum current value among the three-phase current values is greater than the maximum value of the second preset range When it is judged that the current flowing through the switchboard is in an overload state, a third control signal is sent to the display unit so that the maximum current value displays the third color, and the current flow is determined by the color displayed by the maximum current value. Whether the three-phase current value through the switchboard is overloaded.

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