CN111211596B - Method and device for monitoring power utilization state of charging cabinet - Google Patents
Method and device for monitoring power utilization state of charging cabinet Download PDFInfo
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- CN111211596B CN111211596B CN202010047378.2A CN202010047378A CN111211596B CN 111211596 B CN111211596 B CN 111211596B CN 202010047378 A CN202010047378 A CN 202010047378A CN 111211596 B CN111211596 B CN 111211596B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16533—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application
- G01R19/16538—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies
- G01R19/16542—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies for batteries
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
- G01R19/16571—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing AC or DC current with one threshold, e.g. load current, over-current, surge current or fault current
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
Abstract
The invention discloses a method and a device for monitoring the power utilization state of a charging cabinet. Wherein, the method comprises the following steps: sending a query instruction to the current detection component; receiving a total current value of the charging cabinet returned by the current detection assembly; and judging the power utilization state of the charging cabinet according to the change of the total current value. According to the technical scheme, the overall power utilization state of the charging cabinet and the charging state of the power utilization equipment in each bin door are monitored by detecting the total current of the charging cabinet, so that the technical problems that the current detection cost of the charging cabinet is high and the data acquisition is complicated in the prior art are solved.
Description
Technical Field
The invention relates to the field of cabinet current detection, in particular to a method and a device for monitoring the power utilization state of a charging cabinet.
Background
The main function of the charging cabinet is to charge the user's battery. Because the user behavior cannot be completely normalized and the state of the user battery cannot be predicted, when the order is completed, the low charge and the leakage charge of the battery power amount become one of several operation and maintenance points with higher failure rate. As one of the important evaluation criteria of the quality of the charging cabinet, the charging cabinet should preferably ensure that the charging of the user is normal and the benefit of the user is not lost. In terms of the charging state judgment basis, current detection or voltage detection is mainly used for judgment at present.
The line voltage judgment is a low-cost, feasible and effective method, but the method cannot obtain accurate current, cannot control the charging progress of the battery, and cannot control the maximum output of the current. The cabinet that charges can't in time discover the problem and solve the problem because of unable acquisition current data, when the electric current was too big, the trip of opening by air very probably caused trouble such as charging failure.
And the line current judgment is controllable for the single-circuit charging bin and the whole cabinet. Through the change of the monitoring current value, the charging state can be accurately controlled, a prompt is sent to a user, abnormal current can be detected, and production accidents are avoided.
The current detection device 1 is a detection device with multiple mutual inductors, each path of current can be detected, the current detection is accurate, the cost is high, and a charging cabinet is rarely adopted; 2 is the ammeter with long-range meter reading function, only can judge the current state of the same kind, and prior art installs the ammeter in order to realize each door interior current detection for charging respectively in each door of cabinet usually, not only greatly increased the hardware cost, occupy a plurality of MCU serial ports moreover, and MCU data reception is loaded down with trivial details, and the running cost is higher.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the invention provides a method and a device for monitoring the power consumption state of a charging cabinet, which are used for at least solving the technical problems of high current detection cost and complex data acquisition of the charging cabinet in the prior art.
According to an aspect of the embodiments of the present invention, there is provided a method for monitoring a power state of a charging cabinet, including: sending a query instruction to the current detection component; receiving a total current value of the charging cabinet returned by the current detection assembly; and judging the power utilization state of the charging cabinet according to the change of the total current value.
Preferably, the judging the power utilization state of the charging cabinet according to the change of the total current value includes: if the total current value received in the first time interval is continuously zero, judging that a main power supply of the charging cabinet is abnormal; and if the total current value received in the second time interval is continuously higher than the safe current value of the charging cabinet, judging that the charging cabinet is overloaded.
Preferably, when a prompt of a newly added electric device is received, the receiving of the total current value of the charging cabinet returned by the current detection component includes: acquiring and storing a first real-time total current value of the charging cabinet; indicating to turn on a current control switch of the electric equipment; and acquiring a second real-time total current value of the charging cabinet.
Preferably, the judging the power utilization state of the charging cabinet according to the change of the total current value includes: and if the difference value between the second real-time total current value and the first real-time total current value is smaller than a first threshold value, or the difference value between the second real-time total current value and the first real-time total current value is larger than a second threshold value, judging that the charging bin where the electric equipment is located is abnormal in charging.
Preferably, if the difference between the second real-time total current value and the first real-time total current value is smaller than a first threshold, the determining that the charging of the charging bin where the electric device is located is abnormal includes: and continuously acquiring the real-time total current value of the charging cabinet in a third time interval, and determining that the change of the real-time total current value is continuously smaller than the first threshold value, and judging that the charging bin where the electric equipment is located is abnormal in charging.
Preferably, if the difference between the second real-time total current value and the first real-time total current value is smaller than a first threshold, the determining that the charging of the charging bin where the electric device is located is abnormal further includes: instructing to restart the current control switch; and continuously acquiring the real-time total current value of the charging cabinet in a fourth time interval, and determining that the change of the real-time total current value is continuously smaller than the first threshold value, and judging that the charging bin where the electric equipment is located is abnormal in charging.
Preferably, if the difference between the second real-time total current value and the first real-time total current value is greater than a second threshold, the determining that the charging of the charging bin where the electric device is located is abnormal includes: and continuously acquiring the real-time total current value of the charging cabinet in a fifth time interval, and determining that the change of the real-time total current value is continuously greater than the second threshold value, and judging that the charging bin where the electric equipment is located is abnormal in charging.
Preferably, when a plurality of new electric devices are simultaneously received, the step of receiving the total current value of the charging cabinet returned by the current detection component is sequentially executed according to a preset sequence.
According to another aspect of the embodiments of the present invention, there is also provided a charging cabinet power consumption state monitoring apparatus, including: the instruction sending module is used for sending a query instruction to the current detection assembly; the data receiving module is used for receiving the total current value of the charging cabinet returned by the current detection assembly; and the judging module is used for judging the power utilization state of the charging cabinet according to the change of the total current value.
According to another aspect of the embodiment of the invention, the system for monitoring the power consumption state of the charging cabinet comprises a current detection component and a host, wherein the current detection component is connected and communicated with the host; the current detection assembly is used for detecting the total current value of the charging cabinet and sending the total current value to the host; and the host machine judges the power utilization state of the charging cabinet according to the change of the total current value. Wherein the host computer includes: the instruction sending module is used for sending a query instruction to the current detection assembly; the data receiving module is used for receiving the total current value of the charging cabinet returned by the current detection assembly; and the judging module is used for judging the power utilization state of the charging cabinet according to the change of the total current value.
According to another aspect of the embodiments of the present invention, there is also provided a storage medium including a stored program, wherein the program executes the above method.
In the embodiment of the invention, the charging cabinet detects the total current value of the charging cabinet through the current detection component and sends the total current value to the host, and the host judges the power utilization state of the charging cabinet according to the change of the total current value. According to the technical scheme of the embodiment of the invention, the single current detection component (such as an ammeter with a remote meter reading function) is adopted to detect the total current of the whole charging cabinet, and the single current detection component and the host (such as an MCU) are communicated by adopting a single serial port connection, so that the hardware cost and the operation cost of current detection are effectively reduced. Moreover, by adopting the technical scheme of the embodiment of the invention, the overall power utilization state of the charging cabinet can be monitored, the charging state of the power utilization equipment in each bin door can be monitored, the current detection cost is reduced while the current detection effect is ensured, and the technical problems of high current detection cost and complex data acquisition of the charging cabinet in the prior art are solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a schematic flow chart of a charging cabinet power consumption state monitoring method according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a charging cabinet power consumption state monitoring method according to another embodiment of the present invention;
fig. 3 is a schematic diagram of an apparatus for monitoring a power state of a charging cabinet according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in other sequences than described or illustrated herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or modules is not necessarily limited to those steps or modules explicitly listed, but may include other steps or modules not explicitly listed or inherent to such process, method, article, or apparatus.
According to an aspect of an embodiment of the present invention, there is provided a method for monitoring a power state of a charging cabinet, as shown in fig. 1, including:
102, receiving the total current value of the charging cabinet returned by the current detection assembly;
and 103, judging the power utilization state of the charging cabinet according to the change of the total current value.
In this embodiment, the cabinet that charges adopts single current detection subassembly (for example, the ammeter that has long-range meter reading function) to detect the holistic total current of cabinet that charges, adopts single serial ports connection communication between single current detection subassembly and the host computer (for example MCU), has effectively reduced current detection's hardware cost and running cost.
Specifically, when no electric device is in the charging cabinet, the current query period may be slightly longer, for example, the current query period is set to 10s, and the current query period is mainly used for monitoring whether the main power supply of the charging cabinet operates normally; when the charging cabinet is provided with the useful point equipment, the current inquiry period is short, for example, the current inquiry period is set to be 1s, and the current inquiry period is mainly used for monitoring the power utilization state of the charging cabinet so as to ensure that the abnormal power utilization of the charging cabinet is found in time and effective measures are taken in time.
Preferably, the judging the power consumption state of the charging cabinet according to the change of the total current value includes: if the total current value received in the first time interval is continuously zero, judging that a main power supply of the charging cabinet is abnormal; and if the total current value received in the second time interval is continuously higher than the safe current value of the charging cabinet, judging that the charging cabinet is overloaded.
Specifically, in one or more current query periods, if the total current value returned by the current detection assembly is detected to be zero, the main power supply of the charging cabinet is confirmed to be abnormal, the main power supply is disconnected at the moment, the charging cabinet is prompted to be in an unavailable state, the standby power supply is started to work, and main power supply abnormal information is sent to the server; in order to avoid false alarm, the total current value received in 3-5 continuous current inquiry periods is preferably continuously zero, and the main power supply of the charging cabinet is confirmed to be abnormal. If the total current value returned by the current detection assembly is detected to be continuously higher than the safe current value of the charging cabinet in one or more current inquiry periods, determining that the charging cabinet is overloaded, disconnecting the main power supply at the moment, and prompting the charging cabinet to be in an unavailable state; in order to avoid burning out the main power supply and/or the electric equipment, the total current value received in 1-2 current inquiry periods is preferably continuously higher than the safe current of the charging cabinet, and the charging cabinet is confirmed to be overloaded. By adopting the technical scheme of the embodiment, the power utilization state of the charging cabinet can be effectively monitored, the main power supply of the charging cabinet is found to be abnormal or the power utilization is overloaded in time, and effective measures are taken in time to avoid unnecessary loss.
Preferably, when receiving the prompt of the newly added electric device, the receiving of the total current value of the charging cabinet returned by the current detection component includes: acquiring and storing a first real-time total current value of the charging cabinet; indicating to start a current control switch of the electric equipment; and acquiring a second real-time total current value of the charging cabinet.
Specifically, when a prompt of a newly added electric device is received, a current value at the moment is obtained and stored; indicating a current control switch (such as a relay) of the electric equipment to be turned on, namely, the charging bin where the electric equipment is located supplies power to be turned on; at this time, the total current value of the charging cabinet is obtained again. The technical scheme of this embodiment aims at obtaining the real-time total current value before and after newly-increased consumer, judges the charged state in this consumer place charging bin through the change of real-time total current value before and after newly-increased consumer.
Preferably, the judging the power consumption state of the charging cabinet according to the change of the total current value includes: and if the difference value between the second real-time total current value and the first real-time total current value is smaller than a first threshold value, or the difference value between the second real-time total current value and the first real-time total current value is larger than a second threshold value, judging that the charging bin where the electric equipment is located is abnormal in charging.
Specifically, the charging cabinet adds the electric equipment, and in order to avoid abnormal connection of the electric equipment, charging fault or short circuit of a circuit, a threshold value can be set according to related parameters of the electric equipment so as to judge the charging state of the electric equipment by reference. If the difference value between the real-time current value of the newly added electric equipment after being electrified and the real-time current value before being electrified is smaller than a preset first threshold value, confirming that the electric equipment is abnormal in connection or has a charging fault; and if the difference value between the real-time current value of the newly-added electric equipment after being electrified and the real-time current value before being electrified is larger than a preset second threshold value, confirming that the electric equipment is short-circuited. By adopting the technical scheme of the embodiment, the abnormity can be found in time when the electric equipment is newly added, and then the abnormity condition of the user is informed in time.
Preferably, if the difference between the second real-time total current value and the first real-time total current value is smaller than a first threshold, determining that the charging bin where the electric equipment is located is abnormal includes: and continuously acquiring the real-time total current value of the charging cabinet in a third time interval, and determining that the change of the real-time total current value is continuously smaller than the first threshold value, so that the charging abnormality of the charging bin where the electric equipment is located is judged.
Specifically, to avoid the erroneous determination, it is preferable that the change in the real-time total current value is continuously smaller than the first threshold value in a plurality of inquiry periods, and the connection abnormality or the charging failure of the electric device is confirmed. The technical scheme of this embodiment has effectively improved the degree of accuracy of consumer charging state monitoring.
Preferably, if the difference between the second real-time total current value and the first real-time total current value is smaller than the first threshold, determining that the charging of the charging bin where the electric equipment is located is abnormal further comprises: indicating to restart the current control switch; and continuously acquiring the real-time total current value of the charging cabinet in the fourth time interval, and determining that the change of the real-time total current value is continuously smaller than the first threshold value, so that the charging abnormality of the charging bin where the electric equipment is located is judged.
Specifically, in order to further improve the accuracy of monitoring the charging state of the electrical equipment, when the real-time current value change before and after the newly added electrical equipment is powered on is smaller than a first threshold value, and the real-time current value change received in a plurality of continuous inquiry periods is continuously smaller than the first threshold value, an instruction is sent to restart a current control switch (such as a relay), and the real-time current value change received in the plurality of continuous inquiry periods after the current control switch is restarted is still continuously smaller than the first threshold value, at this time, the connection abnormality or the charging fault of the electrical equipment is confirmed, the user is notified, and meanwhile, the information that the electrical equipment is abnormally charged is sent to the server. The technical scheme of the embodiment adopts a mode of repeatedly confirming for many times to judge whether the electric equipment is connected abnormally or has charging fault so as to avoid causing troubles to users due to information misinformation.
Preferably, if the difference between the second real-time total current value and the first real-time total current value is greater than the second threshold, determining that the charging bin where the electric equipment is located is abnormal includes: and continuously acquiring the real-time total current value of the charging cabinet in a fifth time interval, and determining that the change of the real-time total current value is continuously greater than the second threshold value, so that the charging abnormality of the charging bin where the electric equipment is located is judged.
Specifically, to avoid the false determination, it is preferable that the short circuit of the electric device is confirmed only in a case where the change in the real-time total current value is continuously greater than the second threshold value in a plurality of polling periods. The technical scheme of this embodiment has effectively improved the degree of accuracy of consumer charging state monitoring.
Preferably, when the prompts of the plurality of newly added electric devices are received at the same time, the step of receiving the total current value of the charging cabinet returned by the current detection component is sequentially executed according to a preset sequence.
Specifically, if two or more than two electrical devices are added at the same time, in order to avoid mutual interference between current detection and determination, the technical solution of this embodiment sequentially performs the current detection and determination according to a preset sequence. When the current judgment of a new added electric device is carried out, the current judgment of other added electric devices is stored in the execution queue. The charging state of only one newly-added electric equipment can be judged at the same time, and the accuracy of the charging state in the bin gate is effectively improved.
According to the technical scheme of the embodiment of the application, the total current value of the charging cabinet is monitored by adopting the single current monitoring assembly, so that the cost of current monitoring is reduced, and excessive occupation of a host serial port is avoided; in addition, the technical scheme of this application embodiment through the change of total current value judge the power consumption state of the cabinet that charges, not only can effectively monitor the whole power consumption state of the cabinet that charges, can effectively monitor the charged state in each storehouse that charges moreover. In addition, the technical scheme of the embodiment of the application effectively improves the accuracy of current monitoring in a mode of repeated judgment for many times.
This embodiment is intended to further explain the technical solutions of the present invention as a specific embodiment of the present invention.
The embodiment provides a method for monitoring a power consumption state of a charging cabinet, as shown in fig. 2, including:
and step 203, the host machine judges the power utilization state of the charging cabinet according to the change of the total current value received this time compared with the total current value received last time.
Specifically, in this embodiment, 485 serial ports are adopted for connection and communication between the current detection component (for example, an electric meter with a remote meter reading function) of the charging cabinet and the host (for example, the MCU).
When no electric equipment (such as a rechargeable battery) is in the charging cabinet, namely the charging cabinet is in an idle state, the MCU sends a query instruction to the ammeter in a cycle of 10s and receives the total current value of the charging cabinet detected by the ammeter. When the total current value received for 3 times (namely the first time interval is 30s) is zero, confirming that the main power supply of the charging cabinet is abnormal, disconnecting the main power supply, prompting the charging cabinet to be in an unavailable state, starting the standby power supply to work, and sending main power supply abnormal information to the server; when the total current value received twice (namely the second time interval is 20s) is larger than the safe current 16A of the charging cabinet, the charging cabinet is determined to be overloaded, the main power supply is disconnected, and the charging cabinet is indicated to be in an unavailable state. When the charging cabinet is in a use state, the MCU sends a query instruction to the ammeter in a period of 1s, and receives the total current value of the charging cabinet detected by the ammeter. When the total current value received for 5 times (namely the first time interval is 5s) is zero, confirming that the main power supply of the charging cabinet is abnormal, disconnecting the main power supply, prompting the charging cabinet to be in an unavailable state, starting a standby power supply to work, and sending main power supply abnormal information to a server; when the total current value received twice (namely the second time interval is 2s) is larger than the safe current 16A of the charging cabinet, the charging cabinet is determined to be overloaded, the main power supply is disconnected at the moment, and the charging cabinet is indicated to be in an unavailable state. By adopting the technical scheme of the embodiment, the power utilization state of the charging cabinet can be effectively monitored, the main power supply of the charging cabinet is found to be abnormal or the power utilization is overloaded in time, and effective measures are taken in time to avoid unnecessary loss.
As a preferred embodiment, when a user uses the charging cabinet, the charging battery is put in and connected with the charging power supply, the door of the charging cabin is closed, and the MCU receives the prompt of newly added electric equipment; the MCU sends a query instruction to the ammeter, and receives and caches a real-time total current value (namely a first real-time total current value) detected by the ammeter; the MCU indicates to turn on a current control switch (such as a relay) in a charging bin where the rechargeable battery is located; the MCU sends a query instruction to the ammeter and receives a real-time total current value (namely a second real-time total current value) detected by the ammeter; and the charging state of the rechargeable battery in the charging bin is judged according to the change of the real-time total current value obtained before and after the relay is started.
If the difference value between the real-time total current value obtained after the relay is opened and the real-time total current value obtained before the relay is opened is smaller than a preset first threshold value (for example, 70mA-150mA), determining that the rechargeable battery is abnormal in connection or has charging faults; and if the difference value between the real-time total current value obtained after the relay is opened and the real-time total current value obtained before the relay is opened is larger than a preset second threshold value (for example, 5000mA), determining that the rechargeable battery is short-circuited.
It should be noted that the first threshold and the second threshold are set according to the related parameters of the electric equipment and the charging cabinet, wherein the first threshold increases with the increase of the total current. In the embodiment, the first threshold is 70mA to 150mA, and the total current of the charging cabinet increases with the increase of the power consumption devices in the charging cabinet, wherein the first threshold increases by 5mA every time the total current increases by 2000 mA; the second threshold is preset to 5000 mA.
For the condition that the difference value between the real-time total current value obtained after the relay is turned on and the real-time total current value obtained before the relay is turned on is smaller than the preset first threshold, preferably, to avoid misjudgment, the MCU sends a query instruction to the electric meter in a period of 3s and receives the real-time total current value detected by the electric meter, and if the change of the real-time total current value is smaller than the first threshold for 6 consecutive times (i.e., the third time interval is 18s), it is determined that the current in the charging bin where the rechargeable battery is located is too low, and the user is notified. The MCU may continue to perform the above current detection determining step, for example, after the change of the real-time total current value for 6 consecutive times is smaller than the first threshold, continue to obtain the real-time total current value and perform the determination until the current detection determination for 17 detection cycles is performed.
Further optionally, in order to further improve the accuracy of monitoring the charging state of the electric device, when a difference value between a real-time total current value obtained after the relay is turned on and a real-time total current value obtained before the relay is turned on is smaller than a preset first threshold, and a change of the real-time total current value in 17 continuous detection periods is smaller than the first threshold, the MCU instructs to restart the relay, and current detection and judgment are performed again for 17 detection periods (that is, a fourth time interval is 51 s); if the change of the real-time total current value in 17 detection periods (namely the fourth time interval is 51s) which are carried out again is still smaller than the first threshold value, the abnormal connection or charging fault of the rechargeable battery is confirmed, the user is informed, and meanwhile, the information of the abnormal charging in the door where the rechargeable battery is located is sent to the server. The technical scheme of this embodiment adopts the mode of confirming repeatedly many times to judge whether the consumer connects unusually or the trouble of charging, has effectively improved the accuracy of current monitoring to can avoid causing the puzzlement because of the information wrong report to the user.
It should be noted that, for the case that the total current change is always zero in the current detection and determination process, when the change of the total current value is always zero in 6 consecutive real-time times, it may be determined that the charging in the charging bin where the rechargeable battery is located is abnormal, and send the charging abnormal information to the server without the need of subsequent steps.
For the condition that the difference value between the real-time total current value obtained after the relay is turned on and the real-time total current value obtained before the relay is turned on is larger than the preset second threshold, preferably, to avoid misjudgment, the MCU sends a query instruction to the electric meter in a period of 3s and receives the real-time total current value detected by the electric meter, and if the change of the real-time total current value is larger than the second threshold 5000mA for 6 consecutive times (i.e., the fifth time interval is 18s), it is determined that the charging in the charging bin where the rechargeable battery is located is abnormal, the relay is immediately turned off, and meanwhile, charging abnormal information is sent to the server, so as to prevent damage to the rechargeable battery and/or other electric devices in the charging bin.
As an alternative embodiment, if a plurality of electric devices, that is, the charging bin a, the charging bin B, and the charging bin C, are added at the same time, the steps of the current detection and judgment are sequentially performed according to a preset sequence. That is, the current detection determinations of the present embodiment are operated in the form of queues, and the same current detection determination can be operated only one, and the other current detection determinations are stored in the execution queue.
According to the technical scheme of the embodiment of the application, the total current value of the charging cabinet is monitored by adopting the single current monitoring assembly, so that the cost of current monitoring is reduced, and excessive occupation of a host serial port is avoided; in addition, the technical scheme of this application embodiment through the change of total current value judge the power consumption state of the cabinet that charges, not only can effectively monitor the whole power consumption state of the cabinet that charges, can effectively monitor the charged state in each storehouse that charges moreover. In addition, the technical scheme of the embodiment of the application effectively improves the accuracy of current monitoring in a mode of repeated judgment for many times.
It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of steps, but those skilled in the art will recognize that the present invention is not limited by the described order of steps, as some steps may be performed in other orders or simultaneously according to the present invention. Further, it should be understood by those skilled in the art that the embodiments described in the specification are preferred embodiments and the steps involved are not necessarily essential to the invention.
According to another aspect of the embodiments of the present invention, there is provided a charging cabinet power state monitoring device, as shown in fig. 3, including:
the instruction sending module 301 is configured to send a query instruction to the current detection component;
the data receiving module 302 is used for receiving the total current value of the charging cabinet returned by the current detection component;
and the judging module 303 is used for judging the power utilization state of the charging cabinet according to the change of the total current value.
It should be noted that the instruction sending module 301 in this embodiment may be configured to execute step 101 in this embodiment; the data receiving module 302 in this embodiment may be configured to perform step 102 in this embodiment; the determining module 303 in this embodiment may be configured to execute step 103 in this embodiment.
It should be noted here that the modules described above are the same as the examples and application scenarios implemented by the corresponding steps, but are not limited to the disclosure of the above embodiments.
In addition, each functional module in the embodiment of the present invention may be implemented in a form of hardware, or may be implemented in a form of software functional unit, and the present application is not particularly limited.
According to another aspect of the embodiment of the invention, the system for monitoring the power consumption state of the charging cabinet comprises a current detection assembly and a host, wherein the current detection assembly is connected and communicated with the host; the current detection assembly is used for detecting the total current value of the charging cabinet and sending the total current value to the host; the host machine judges the power utilization state of the charging cabinet according to the change of the total current value. Wherein, the host computer includes: the instruction sending module is used for sending a query instruction to the current detection assembly; the data receiving module is used for receiving the total current value of the charging cabinet returned by the current detection assembly; and the judging module is used for judging the power utilization state of the charging cabinet according to the change of the total current value.
According to the technical scheme of the embodiment of the application, the total current value of the charging cabinet is monitored by adopting the single current monitoring assembly, so that the cost of current monitoring is reduced, and excessive occupation of a host serial port is avoided; in addition, the technical scheme of this application embodiment through the change of total current value judge the power consumption state of the cabinet that charges, not only can effectively monitor the whole power consumption state of the cabinet that charges, can effectively monitor the charged state in each storehouse that charges moreover. In addition, the technical scheme of the embodiment of the application effectively improves the accuracy of current monitoring in a mode of repeated judgment for many times.
The embodiment of the invention also provides a storage medium. Alternatively, in this embodiment, the storage medium may be a program code for executing the method for charging state of the charging cabinet.
Optionally, in this embodiment, the storage medium is configured to store program code for performing the following steps:
sending a query instruction to the current detection component;
receiving the total current value of the charging cabinet returned by the current detection assembly;
and judging the power utilization state of the charging cabinet according to the change of the total current value.
Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment is not described herein again.
Optionally, in this embodiment, the storage medium may include, but is not limited to: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. A method for monitoring the power utilization state of a charging cabinet is used for monitoring the power utilization state of the charging cabinet by a host, and is characterized by comprising the following steps:
sending a query instruction to the current detection component;
receiving a total current value of the charging cabinet returned by the current detection assembly;
judging the power utilization state of the charging cabinet according to the change of the total current value;
wherein, when receiving the suggestion of newly-increased consumer, the total current value of receiving the cabinet that charges that current detection subassembly returned includes: acquiring and storing a first real-time total current value of the charging cabinet; indicating to turn on a current control switch of the electric equipment; acquiring a second real-time total current value of the charging cabinet; the judging the power utilization state of the charging cabinet according to the change of the total current value comprises the following steps: if the difference value between the second real-time total current value and the first real-time total current value is smaller than a first threshold value, or the difference value between the second real-time total current value and the first real-time total current value is larger than a second threshold value, judging that the charging bin where the electric equipment is located is abnormal in charging;
the first threshold value is 70mA-150mA, and the first threshold value is increased by 5mA every time the total current of the charging cabinet is increased by 2000 mA; the second threshold is 5000 mA.
2. The method for monitoring the power utilization state of the charging cabinet according to claim 1, wherein the step of judging the power utilization state of the charging cabinet according to the change of the total current value comprises the following steps:
if the total current value received in the first time interval is continuously zero, judging that a main power supply of the charging cabinet is abnormal;
if the total current value received in the second time interval is continuously higher than the safe current value of the charging cabinet, judging that the charging cabinet is overloaded;
the first time interval is 3-5 current query cycles, and the second time interval is 1-2 current query cycles; the charging cabinet is different in state, the current inquiry period is different in length, and the state of the charging cabinet comprises an idle state and a use state.
3. The method for monitoring the power consumption state of the charging cabinet according to claim 1, wherein if the difference value between the second real-time total current value and the first real-time total current value is smaller than a first threshold value, the step of judging that the charging bin where the power consumption equipment is located is abnormal includes:
and continuously acquiring the real-time total current value of the charging cabinet in a third time interval, and determining that the change of the real-time total current value is continuously smaller than the first threshold value, and judging that the charging bin where the electric equipment is located is abnormal in charging.
4. The method for monitoring the power consumption state of the charging cabinet according to claim 3, wherein if the difference value between the second real-time total current value and the first real-time total current value is smaller than a first threshold value, the step of judging that the charging bin where the power consumption equipment is located is abnormal further comprises the steps of:
instructing to restart the current control switch;
and continuously acquiring the real-time total current value of the charging cabinet in a fourth time interval, and determining that the change of the real-time total current value is continuously smaller than the first threshold value, and judging that the charging bin where the electric equipment is located is abnormal in charging.
5. The method for monitoring the power consumption state of the charging cabinet according to claim 1, wherein if the difference value between the second real-time total current value and the first real-time total current value is greater than a second threshold value, the step of judging that the charging bin where the power consumption equipment is located is abnormal includes:
and continuously acquiring the real-time total current value of the charging cabinet in a fifth time interval, and determining that the change of the real-time total current value is continuously greater than the second threshold value, and judging that the charging bin where the electric equipment is located is abnormal in charging.
6. The charging cabinet power consumption state monitoring method according to any one of claims 1 to 5, wherein the step of receiving the total current value of the charging cabinet returned by the current detection component is performed sequentially according to a preset sequence when a plurality of new electric devices are simultaneously prompted.
7. The utility model provides a cabinet that charges power consumption state monitoring devices which characterized in that includes:
the instruction sending module is used for sending a query instruction to the current detection assembly;
the data receiving module is used for receiving the total current value of the charging cabinet returned by the current detection assembly;
the judging module is used for judging the power utilization state of the charging cabinet according to the change of the total current value;
wherein, when receiving the suggestion of newly-increased consumer, the data receiving module is used for: acquiring and storing a first real-time total current value of the charging cabinet; indicating to turn on a current control switch of the electric equipment; acquiring a second real-time total current value of the charging cabinet; the judging module is used for: if the difference value between the second real-time total current value and the first real-time total current value is smaller than a first threshold value, or the difference value between the second real-time total current value and the first real-time total current value is larger than a second threshold value, judging that the charging bin where the electric equipment is located is abnormal in charging;
the first threshold value is 70mA-150mA, and the first threshold value is increased by 5mA every time the total current of the charging cabinet is increased by 2000 mA; the second threshold is 5000 mA.
8. The system for monitoring the power utilization state of the charging cabinet is characterized by comprising a current detection assembly and a host, wherein the current detection assembly is connected and communicated with the host; the current detection assembly is used for detecting the total current value of the charging cabinet and sending the total current value to the host; the host machine judges the power utilization state of the charging cabinet according to the change of the total current value;
the host machine monitors the power utilization state of the charging cabinet by using the power utilization state monitoring method of the charging cabinet according to claim 1.
9. A storage medium, characterized in that the storage medium comprises a stored program, wherein the program when executed performs the method of any of the preceding claims 1 to 6.
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| CN113156195B (en) * | 2021-04-25 | 2023-04-25 | 摩力方科技(北京)有限公司 | Current detection method and device |
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