CN101799487B - Method and equipment for detecting power supply voltage fluctuation - Google Patents
Method and equipment for detecting power supply voltage fluctuation Download PDFInfo
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- CN101799487B CN101799487B CN200910003881.1A CN200910003881A CN101799487B CN 101799487 B CN101799487 B CN 101799487B CN 200910003881 A CN200910003881 A CN 200910003881A CN 101799487 B CN101799487 B CN 101799487B
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Abstract
The invention discloses a method and equipment for detecting the power supply voltage fluctuation, belonging to the field of the circuit. The method for detecting the power supply voltage fluctuation comprises the following steps: acquiring the power supply voltage of power supply equipment; sampling the power supply voltage of power supply equipment to acquire the sampled power supply voltage and the sampled power supply voltage generation time; judging whether the sampled power supply voltage exceeds the normal range of the power supply voltage; recording the sampled power supply voltage value and the sampled power supply voltage value generation time and sending an alarming signal if the sampled power supply voltage exceeds the normal range of the power supply voltage; or recording the sampled power supply voltage value and the sampled power supply voltage value generation time if the sampled power supply voltage does not exceed the normal range of the power supply voltage. The equipment for detecting the power supply voltage fluctuation comprises an acquiring module, a sampling module, a judging module, a first recording module and a second recording module. Due to the adoption of the method for detecting the power supply voltage fluctuation, which is provided in the embodiment of the invention, the power supply voltage of inputted in communication equipment can be sampled accurately, the power supply voltage fluctuation range, the abnormal power supply voltage and the abnormal power supply voltage generation time can be recorded, and the power supply voltage fluctuation curve can be outputted.
Description
Technical field
The present invention relates to circuit field, particularly a kind of method and apparatus that detects mains fluctuations.
Background technology
Along with the development of the communication technology, communication facilities is more and more higher to the performance of power supply and accuracy requirement, so need to detect the parameter of power supply, especially the voltage of power supply is detected.
Communication facilities can provide overvoltage, the undervoltage alarm measuring ability to power supply at present, judge that accordingly power supply is whether within normal voltage scope (being generally-36Vdc～-72Vdc), when the input voltage of power supply is during lower than minimum voltage value or higher than maximum voltage value, communication facilities reports voltage out-of-limit alarm, and this detection method is voltage alarming threshold detection method.
Except communication facilities can be realized voltage out-of-limit alarm function, communications equipment room power-equipment and Communication Power Equipment also can provide supply voltage Threshold Crossing Alert function, and magnitude of voltage measuring ability is provided.
In realizing process of the present invention, inventor finds that above-mentioned prior art at least has following shortcoming and defect:
Voltage alarming threshold detection method, only provides overvoltage, undervoltage alarm measuring ability to power supply, and can not gather and record scope, abnormal voltage value and the generation time of concrete mains fluctuations; Although communications equipment room power-equipment and Communication Power Equipment can provide magnitude of voltage measuring ability, its accuracy of detection is limited, and voltage accuracy is more than 1.5V conventionally, and time precision, more than 1 second, can not detect transient fluctuation situation and the generation time of supply voltage.
Summary of the invention
The embodiment of the present invention provides a kind of method and apparatus that detects mains fluctuations, has solved in prior art, can not the magnitude of voltage of accurate recording supply voltage and the problem of generation time.Described technical scheme is as follows:
The embodiment of the present invention provides a kind of method that detects mains fluctuations, and method comprises:
Obtain the supply voltage of power-supply device;
Described supply voltage is sampled, the magnitude of voltage after being sampled and the generation time of described magnitude of voltage;
Judge whether described magnitude of voltage surpasses the normal range of described supply voltage;
If so, record the generation time of described magnitude of voltage and described magnitude of voltage, and send alerting signal;
Otherwise, record the generation time of described magnitude of voltage and described magnitude of voltage;
The described supply voltage that obtains power-supply device, also comprises:
When described supply voltage is negative voltage, described supply voltage is converted to positive voltage;
Described described supply voltage is sampled, the magnitude of voltage after being sampled and the generation time of described magnitude of voltage, comprising:
Adopt transforming circuit that described supply voltage is converted to the manageable voltage of magnitude of voltage detection chip;
Voltage after described conversion is sampled, the magnitude of voltage after being sampled and the generation time of described magnitude of voltage; Described magnitude of voltage precision is ± 0.2V in, the time precision of described generation time is in 1ms;
Magnitude of voltage after described sampling is converted to the manageable digital signal of micro-control unit MCU, and described digital signal is sent to described MCU, by described MCU, described digital signal is converted to corresponding magnitude of voltage, and record described magnitude of voltage and generation time, the supply voltage value of record and generation time are converted to digital signal, if and described supply voltage value exceeds supply voltage normal range, carry alerting signal in described digital signal;
Wherein, described method also comprises: after described digital signal is isolated, be transferred in equipment monitoring system or personal computer PC; described equipment monitoring system or PC are received after the digital signal of described MCU transmission; judge whether described digital signal carries alerting signal; if so, described equipment monitoring system or PC send alarm; And described equipment monitoring system or PC are received after the digital signal of described MCU transmission, and the digital signal receiving is converted to supply voltage value and generation time, in mains fluctuations curve, show;
After the described supply voltage that obtains power-supply device, described method also comprises:
Described supply voltage is detected, judge whether to occur power down, or, overshoot, or, transition;
If so, send alerting signal, and record the magnitude of voltage of described supply voltage and the generation time of described magnitude of voltage;
Describedly judge whether that power down occurs to be comprised: if the magnitude of voltage of described supply voltage detected, be 0, judge power-down conditions occurs;
Describedly judge whether that overshoot occurs to be comprised: if the magnitude of voltage detecting sometime becomes suddenly very high, judge overshoot condition occurs;
Describedly judge whether that transition occurs to be comprised: if the magnitude of voltage detecting sometime alters a great deal, judge the transition situation that occurs.
The embodiment of the present invention provides a kind of equipment that detects mains fluctuations, and equipment comprises:
Acquisition module, for obtaining the supply voltage of power-supply device;
Sampling module, samples for the supply voltage that described acquisition module is obtained, the magnitude of voltage after being sampled and the generation time of described magnitude of voltage;
Judge module, for judging whether the magnitude of voltage of described sampling module sampling surpasses the normal range of described supply voltage;
The first logging modle, for judging that when described judge module the magnitude of voltage of described sampling surpasses the normal range of described supply voltage, records the generation time of described magnitude of voltage and described magnitude of voltage;
Alarm module, when judging that when described judge module the magnitude of voltage of described sampling surpasses the normal range of described supply voltage, sends alerting signal;
The second logging modle, while surpassing the normal range of described supply voltage for the magnitude of voltage that judges described sampling when described judge module, records the generation time of described magnitude of voltage and described magnitude of voltage;
Described acquisition module, also comprises:
Converting unit, while being negative voltage for the supply voltage obtaining when described acquisition module, is converted to positive voltage by described supply voltage;
Described sampling module specifically comprises:
The first converting unit, is converted to the manageable voltage of magnitude of voltage detection chip for the supply voltage that adopts transforming circuit that described acquisition module is obtained;
Sampling unit, for the voltage after described conversion is sampled, the magnitude of voltage after being sampled and the generation time of described magnitude of voltage, described magnitude of voltage precision is ± 0.2V in, the time precision of described generation time is in 1ms;
The second converting unit, for the magnitude of voltage after described sampling is converted to the manageable digital signal of micro-control unit MCU, and described digital signal is sent to described MCU, by described MCU, described digital signal is converted to corresponding magnitude of voltage, and record described magnitude of voltage and generation time, the supply voltage value of record and generation time are converted to digital signal, and if described supply voltage value exceed supply voltage normal range, in described digital signal, carry alerting signal;
Wherein, described equipment also comprises:
Communication module, after being isolated, described digital signal is transferred in equipment monitoring system or personal computer PC, described equipment monitoring system or PC are received after the digital signal of described MCU transmission, judge whether described digital signal carries alerting signal, if so, described equipment monitoring system or PC send alarm; And described equipment monitoring system or PC are received after the digital signal of described MCU transmission, and the digital signal receiving is converted to supply voltage value and generation time, in mains fluctuations curve, show;
Detection module, detects for the supply voltage that described acquisition module is obtained, and judges whether to occur power down, or, overshoot, or, transition; If so, send alerting signal, and record the magnitude of voltage of described supply voltage and the generation time of described magnitude of voltage;
When described detection module judges whether power down occurs, if be 0 for the magnitude of voltage of described supply voltage being detected, judge power-down conditions occurs;
Describedly judge whether that overshoot occurs to be comprised: if the magnitude of voltage detecting sometime becomes suddenly very high, judge overshoot condition occurs;
Describedly judge whether that transition occurs to be comprised: if the magnitude of voltage detecting sometime alters a great deal, judge the transition situation that occurs.
The beneficial effect that the technical scheme that the embodiment of the present invention provides is brought is:
The method that the embodiment of the present invention provides, realized supply voltage value has accurately been sampled, the scope of recording power voltage fluctuation, abnormal voltage value and generation time, and can the output voltage curve of cyclical fluctuations, at supply voltage, exceed normal voltage scope and produce in moment situation, can be in time accurate abnormal magnitude of voltage and the time value of recording power, and abnormality alarming is reported to main frame or webmaster, for analyzing and Positioning Power voltage fluctuation problem is provided convenience.
Accompanying drawing explanation
Fig. 1 is the method flow schematic diagram that the embodiment of the present invention 1 provides;
Fig. 2 is the circuit diagram of the detection mains fluctuations that provide of the embodiment of the present invention 2;
Fig. 3 is the method flow schematic diagram that the embodiment of the present invention 2 provides;
Fig. 4 is the mains fluctuations curve synoptic diagram that the embodiment of the present invention 2 provides;
Fig. 5 is the equipment schematic diagram that the embodiment of the present invention 3 provides.
Embodiment
For making object, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Embodiment 1
In order to realize, can accurately sample to communication facilities input supply voltage value, the scope of recording power voltage fluctuation, abnormal voltage value and generation time, and can the output voltage curve of cyclical fluctuations, the embodiment of the present invention provides a kind of method that detects mains fluctuations, referring to Fig. 1, the method comprises:
101: the supply voltage that obtains power-supply device;
102: supply voltage is sampled, the magnitude of voltage after being sampled and the generation time of magnitude of voltage;
103: judge the whether normal range of beyond supply voltage of magnitude of voltage;
If so, the generation time of recording voltage value and magnitude of voltage, and send alerting signal;
Otherwise, the generation time of recording voltage value and magnitude of voltage.
Wherein, after obtaining the supply voltage of power-supply device, method also comprises:
Supply voltage is detected, judge whether to occur power down, or, overshoot, or, transition;
If so, send alerting signal, and the magnitude of voltage of recording power voltage and the generation time of magnitude of voltage.
Wherein, supply voltage is sampled, the magnitude of voltage after being sampled and the generation time of magnitude of voltage, specifically comprise:
Supply voltage is converted to the manageable voltage of magnitude of voltage detection chip;
Voltage after conversion is sampled, the magnitude of voltage after being sampled and the generation time of magnitude of voltage;
Magnitude of voltage after sampling is converted to digital signal.
Wherein, if so, after the generation time of recording voltage value and magnitude of voltage, also comprise:
According to the magnitude of voltage of record and the generation time of magnitude of voltage, in the curve of cyclical fluctuations figure of supply voltage, show;
Correspondingly, otherwise, after the generation time of recording voltage value and magnitude of voltage, also comprise:
According to the magnitude of voltage of record and the generation time of magnitude of voltage, in the curve of cyclical fluctuations figure of supply voltage, show.
Wherein, if so, send alerting signal, and after the magnitude of voltage of recording power voltage and the generation time of magnitude of voltage, also comprise:
According to the magnitude of voltage of record and the generation time of magnitude of voltage, in the curve of cyclical fluctuations figure of supply voltage, show.
Wherein, obtain the supply voltage of power-supply device, also comprise:
When supply voltage is negative voltage, supply voltage is converted to positive voltage.
The method that the embodiment of the present invention provides, realized supply voltage value has accurately been sampled, the scope of recording power voltage fluctuation, abnormal voltage value and generation time, and can the output voltage curve of cyclical fluctuations, at supply voltage, exceed normal voltage scope and produce in moment situation, can be in time accurate abnormal magnitude of voltage and the time value of recording power, and abnormality alarming is reported to main frame or webmaster, for analyzing and Positioning Power voltage fluctuation problem is provided convenience.
Embodiment 2
Referring to Fig. 2, the embodiment of the present invention provides the Circuits System of a set of detection mains fluctuations, this cover main circuit will be divided into four parts: polarity modular converter, magnitude of voltage detection module, power supply transient detection module, communication module, and wherein, the function of each several part circuit is as follows:
1), polarity modular converter, major function is that the negative supply voltage of input is converted to positive voltage; If positive supply is monitored, this part can be removed.
2), magnitude of voltage detection module, wherein in magnitude of voltage detection module, include magnitude of voltage detection chip, first will be detected supply voltage and be converted to the treatable voltage range of magnitude of voltage detection chip, such as 0～5VDC, the embodiment of the present invention is not limited to this voltage range; Again the voltage after transforming being sent to magnitude of voltage detection chip detects; Magnitude of voltage detection chip reports MCU(Micro Controller Unit, micro-control unit by the magnitude of voltage detecting) process, wherein, the voltage detecting precision that magnitude of voltage detection chip detects is in ± 0.2V.
3), power supply transient detection module, input power power down, overshoot, transition situation can be detected moment, when input power generation power down, overshoot, fluctuation, transition situation, power supply transient detection module just directly stops other trace routines of MCU, MCU gets off this logout, and to device detection system or PC(Personal Computer, personal computer) machine reports power supply transient alarm, and do not need to carry out magnitude of voltage detection again.
4), communication module, can realize MCU and communicate by letter with equipment monitoring system, also can realize MCU and PC direct communication, this communication module had both been supported usb communication, also supported serial communication; And the electrical isolation module in this communication module, does not affect the normal use of peripherals while making signal output.
Below in conjunction with each part mentioned above circuit, the method that the embodiment of the present invention is provided is described in detail, and referring to Fig. 3, specific implementation process is as follows:
201: polarity modular converter is converted to positive voltage by the negative supply voltage of input power output, and the positive voltage after conversion is sent to respectively to magnitude of voltage detection module and power supply transient detection module;
Wherein, because the voltage that generally input power is exported is all negative voltage, thus need to by this negative voltage transition, be positive voltage by polarity modular converter, if the voltage of input power output is-48V that after polarity modular converter, voltage becomes 48V.The situation that the voltage of exporting for input power is positive voltage, can not carry out this step.
202: the positive voltage that magnitude of voltage detection module receiving polarity modular converter sends, execution step 203; The positive voltage that power supply transient detection module receiving polarity modular converter sends, judges whether this voltage is anomalous event;
Wherein, the positive voltage that magnitude of voltage detection module receiving polarity modular converter sends, continues execution step 203; And the positive voltage that power supply transient detection module receiving polarity modular converter sends judges whether this voltage is anomalous event, detailed process is as follows:
If power supply transient detection module receives after this supply voltage, the magnitude of voltage that this supply voltage detected is 0, judges and produces power-down conditions, now
202a: power supply transient detection module sends exception reporting to MCU;
202b:MCU receives after this unusual occurrence report, stops at once other trace routine, and records this anomalous event and corresponding generation time, and this anomalous event and corresponding generation time are sent to equipment monitoring system or PC;
202c: equipment monitoring system or PC receive after this anomalous event and corresponding generation time, send alarm notification staff and process, and this anomalous event and corresponding generation time are embodied in supply voltage value curve of cyclical fluctuations figure.
Above-mentioned when power supply generation power down, the processing procedure of power supply transient detection module, situation for power supply overshoot, the magnitude of voltage that power supply transient detection module detects sometime becomes suddenly very high, judge and now produce abnormal conditions, its processing procedure is identical with the situation of power supply power-fail, repeats no more; For the situation of power supply transient, the magnitude of voltage that power supply transient detection module detects sometime alters a great deal, and judges and now produces abnormal conditions, and its processing procedure is identical with the situation of power supply power-fail, repeats no more.
If power supply transient detection module does not detect as the anomalous event of above-mentioned power down, overshoot or transition, power supply transient detection module will not deal with the supply voltage receiving.
203: magnitude of voltage detection module is converted to the manageable voltage of magnitude of voltage detection chip by the positive voltage receiving;
Wherein, first magnitude of voltage detection module is transformed into the supply voltage of reception in the manageable voltage range of magnitude of voltage detection chip, such as 0～5VDC, can adopt transforming circuit to realize.The embodiment of the present invention is not restricted the processing voltage range of magnitude of voltage detection chip, can select different magnitude of voltage detection chip according to actual conditions, and corresponding voltage process range is different.
204: magnitude of voltage detection module is sampled to the supply voltage after changing, the magnitude of voltage after being sampled;
Wherein, magnitude of voltage detection module is converted to positive voltage after the manageable voltage of magnitude of voltage detection chip, and magnitude of voltage detection chip is sampled to the supply voltage after changing, the magnitude of voltage after being sampled; Wherein, the accuracy of detection of the magnitude of voltage detection chip in the embodiment of the present invention be ± 0.2V in.
205: magnitude of voltage detection module is converted to the manageable digital signal of MCU by the magnitude of voltage after sampling, and the digital signal after conversion is sent to MCU;
Wherein, magnitude of voltage detection module is according to default transformation rule, magnitude of voltage after sampling is converted to the manageable digital signal of MCU, for example the sample voltage value of-48Vdc is converted to 0011,0110,0100,1111, the embodiment of the present invention does not limit the concrete mode adopting when the magnitude of voltage after sampling is converted to digital signal, can be certain algorithm, can be arbitrary other transformation rules yet.
The digital signal that 206:MCU receiver voltage value detection module sends, is converted to corresponding magnitude of voltage by this digital signal, and judges whether this magnitude of voltage exceeds supply voltage normal range, if so, records this magnitude of voltage and generation time and carries alerting signal; Otherwise, record this magnitude of voltage and generation time.
Wherein, the digital signal that MCU receiver voltage value detection module sends, processes the digital signal receiving, and this digital signal is converted to corresponding magnitude of voltage;
When this magnitude of voltage exceeds supply voltage normal range, comprise lower than the magnitude of voltage of minimum voltage and generation time, higher than magnitude of voltage and the generation time of maximum voltage, record this magnitude of voltage and generation time and carry alerting signal simultaneously, wherein, the magnitude of voltage precision recording is all in ± 0.2V, and the time precision of the generation time recording is all in 1ms.
For example: the normal range of supply voltage is 36V～72V, if the magnitude of voltage receiving is 24V, by this magnitude of voltage 24V with produce together with time of 24V magnitude of voltage and record and carry alerting signal simultaneously; If the magnitude of voltage receiving is 86V, by this magnitude of voltage 86V and time of producing 86V magnitude of voltage also together with record carry alerting signal simultaneously.
When this magnitude of voltage does not exceed supply voltage normal range, MCU directly records this magnitude of voltage and generation time.
207:MCU is converted to digital signal by the supply voltage value of record and generation time, by communication module, digital signal is sent to equipment monitoring system or PC, and preserves this digital signal.
Wherein, MCU by record supply voltage value and generation time be converted to digital signal, if wherein this magnitude of voltage exceeds supply voltage normal range, in this digital signal, carry alerting signal; Electrical isolation unit by this digital signal through communication module isolates, and does not affect the normal use of peripherals while making digital signal output; Again by usb communication or serial communication, by digital data transmission in equipment monitoring system or PC; MCU is kept at digital signal in FLASH unit.
208: equipment monitoring system or PC receive the digital signal that MCU sends, and judge whether this digital signal carries alerting signal, and if so, equipment monitoring system or PC send alarm, and perform step 209; Otherwise, directly perform step 209;
Wherein, equipment monitoring system or PC receive after the digital signal that MCU sends, if this digital signal is carried alerting signal, send warning, notify staff now supply voltage exceed the processing in time of supply voltage normal range needs.
209: equipment monitoring system or PC are converted to supply voltage value and generation time by the digital signal receiving, and according to this supply voltage value and generation time, in mains fluctuations curve map, show.
Wherein, equipment monitoring system or PC are converted to the digital signal of reception after supply voltage value and generation time, according to supply voltage value and corresponding generation time, relevant position at the mains fluctuations curve map of equipment monitoring system or PC side shows, wherein, this curve map can reflect that supply voltage is in fluctuation situation in the same time not clearly.
Referring to Fig. 4, supply voltage value curve of cyclical fluctuations figure: at t
1～t
3in time period, supply voltage value is higher than the normal range of supply voltage; At t
4～t
6in time period, supply voltage value is lower than the normal range of supply voltage; At t
8constantly, the voltage of power supply becomes suddenly 0, and power supply power-fail has occurred; At t
10constantly, it is very high that the voltage of power supply becomes suddenly, and power supply overshoot has occurred; At t
11constantly, the voltage of power supply alters a great deal suddenly, and power supply transient has occurred.
The method that the embodiment of the present invention provides, realized supply voltage value has accurately been sampled, the scope of recording power voltage fluctuation, abnormal voltage value and generation time, and can the output voltage curve of cyclical fluctuations, at supply voltage, exceed normal voltage scope and produce in moment situation, can be in time accurate abnormal magnitude of voltage and the time value of recording power, and abnormality alarming is reported to main frame or webmaster, for analyzing and Positioning Power voltage fluctuation problem is provided convenience.
Embodiment 3
The embodiment of the present invention provides a kind of equipment that detects mains fluctuations, and referring to Fig. 5, this equipment comprises:
Acquisition module 301, for obtaining the supply voltage of power-supply device;
Sampling module 302, samples for the supply voltage that acquisition module 301 is obtained, the magnitude of voltage after being sampled and the generation time of magnitude of voltage, and the function of this module is as the magnitude of voltage detection module in Fig. 3;
Judge module 303, for the magnitude of voltage that the judges sampling module 302 sampling normal range of beyond supply voltage whether;
The first logging modle 304, for the normal range of the magnitude of voltage beyond supply voltage when judge module 303 judgement samplings, the generation time of recording voltage value and magnitude of voltage;
Alarm module 305, for when judge module 303 judges the normal range of the magnitude of voltage beyond supply voltage of sampling, sends alerting signal;
The second logging modle 306, while there is no the normal range of beyond supply voltage for the magnitude of voltage when judge module 303 judgement samplings, the generation time of recording voltage value and magnitude of voltage.
Wherein, equipment also comprises:
Detection module, detects for the supply voltage that acquisition module 301 is obtained, and judges whether to occur power down, or, overshoot, or, transition; If so, send alerting signal, and the magnitude of voltage of recording power voltage and the generation time of magnitude of voltage, the function of this module is as the power supply transient detection module in Fig. 3.
Wherein, sampling module 302, specifically comprises:
The first converting unit, is converted to the manageable voltage of magnitude of voltage detection chip for the supply voltage that acquisition module 301 is obtained;
Sampling unit, for the voltage after conversion is sampled, the magnitude of voltage after being sampled and the generation time of magnitude of voltage;
The second converting unit, for being converted to digital signal by the magnitude of voltage after sampling.
Wherein, the first logging modle 304 also comprises:
The first display unit after the generation time when the first logging modle 304 recording voltage values and magnitude of voltage, according to the magnitude of voltage of record and the generation time of magnitude of voltage, shows in the curve of cyclical fluctuations figure of supply voltage;
Correspondingly, the second logging modle 306 also comprises:
The second display unit after the generation time when the second logging modle 306 recording voltage values and magnitude of voltage, according to the magnitude of voltage of record and the generation time of magnitude of voltage, shows in the curve of cyclical fluctuations figure of supply voltage.
Wherein, detection module also comprises:
The 3rd display unit after the generation time for the magnitude of voltage when detection module recording power voltage and magnitude of voltage, according to the magnitude of voltage of record and the generation time of magnitude of voltage, shows in the curve of cyclical fluctuations figure of supply voltage.
Wherein, acquisition module 301, also comprises:
Converting unit, while being negative voltage for the supply voltage obtaining when acquisition module 301, is converted to positive voltage by supply voltage, and the function of this unit is as the polarity modular converter in Fig. 3.
The equipment that the embodiment of the present invention provides, realized supply voltage value has accurately been sampled, the scope of recording power voltage fluctuation, abnormal voltage value and generation time, and can the output voltage curve of cyclical fluctuations, at supply voltage, exceed normal voltage scope and produce in moment situation, can be in time accurate abnormal magnitude of voltage and the time value of recording power, and abnormality alarming is reported to main frame or webmaster, for analyzing and Positioning Power voltage fluctuation problem is provided convenience.
The embodiment of the present invention can utilize software to realize, and corresponding software program can be stored in the storage medium can read, for example, and in the hard disk of router, buffer memory or CD.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (4)
1. a method that detects mains fluctuations, is characterized in that, described method comprises:
Obtain the supply voltage of power-supply device;
Described supply voltage is sampled, the magnitude of voltage after being sampled and the generation time of described magnitude of voltage;
Judge whether described magnitude of voltage surpasses the normal range of described supply voltage;
If so, record the generation time of described magnitude of voltage and described magnitude of voltage, and send alerting signal;
Otherwise, record the generation time of described magnitude of voltage and described magnitude of voltage;
The described supply voltage that obtains power-supply device, also comprises:
When described supply voltage is negative voltage, described supply voltage is converted to positive voltage;
Described described supply voltage is sampled, the magnitude of voltage after being sampled and the generation time of described magnitude of voltage, comprising:
Adopt transforming circuit that described supply voltage is converted to the manageable voltage of magnitude of voltage detection chip;
Voltage after described conversion is sampled, the magnitude of voltage after being sampled and the generation time of described magnitude of voltage; Described magnitude of voltage precision is ± 0.2V in, the time precision of described generation time is in 1ms;
Magnitude of voltage after described sampling is converted to the manageable digital signal of micro-control unit MCU, and described digital signal is sent to described MCU, by described MCU, described digital signal is converted to corresponding magnitude of voltage, and record described magnitude of voltage and generation time, the supply voltage value of record and generation time are converted to digital signal, if and described supply voltage value exceeds supply voltage normal range, carry alerting signal in described digital signal;
Wherein, described method also comprises: after described digital signal is isolated, be transferred in equipment monitoring system or personal computer PC; described equipment monitoring system or PC are received after the digital signal of described MCU transmission; judge whether described digital signal carries alerting signal; if so, described equipment monitoring system or PC send alarm; And described equipment monitoring system or PC are received after the digital signal of described MCU transmission, and the digital signal receiving is converted to supply voltage value and generation time, in mains fluctuations curve, show;
After the described supply voltage that obtains power-supply device, described method also comprises:
Described supply voltage is detected, judge whether to occur power down, or, overshoot, or, transition;
If so, send alerting signal, and record the magnitude of voltage of described supply voltage and the generation time of described magnitude of voltage;
Describedly judge whether that power down occurs to be comprised: if the magnitude of voltage of described supply voltage detected, be 0, judge power-down conditions occurs;
Describedly judge whether that overshoot occurs to be comprised: if the magnitude of voltage detecting sometime becomes suddenly very high, judge overshoot condition occurs;
Describedly judge whether that transition occurs to be comprised: if the magnitude of voltage detecting sometime alters a great deal, judge the transition situation that occurs.
2. the method for claim 1, is characterized in that, described if after recording the generation time of described magnitude of voltage and described magnitude of voltage, also comprise:
According to the generation time of the magnitude of voltage of described record and described magnitude of voltage, in the curve of cyclical fluctuations figure of described supply voltage, show;
Correspondingly, described otherwise, after recording the generation time of described magnitude of voltage and described magnitude of voltage, also comprise:
According to the generation time of the magnitude of voltage of described record and described magnitude of voltage, in the curve of cyclical fluctuations figure of described supply voltage, show;
Correspondingly, described if send alerting signal, and after recording the magnitude of voltage of described supply voltage and the generation time of described magnitude of voltage, also comprise:
According to the generation time of the magnitude of voltage of described record and described magnitude of voltage, in the curve of cyclical fluctuations figure of described supply voltage, show.
3. an equipment that detects mains fluctuations, is characterized in that, described equipment comprises:
Acquisition module, for obtaining the supply voltage of power-supply device;
Sampling module, samples for the supply voltage that described acquisition module is obtained, the magnitude of voltage after being sampled and the generation time of described magnitude of voltage;
Judge module, for judging whether the magnitude of voltage of described sampling module sampling surpasses the normal range of described supply voltage;
The first logging modle, for judging that when described judge module the magnitude of voltage of described sampling surpasses the normal range of described supply voltage, records the generation time of described magnitude of voltage and described magnitude of voltage;
Alarm module, when judging that when described judge module the magnitude of voltage of described sampling surpasses the normal range of described supply voltage, sends alerting signal;
The second logging modle, while surpassing the normal range of described supply voltage for the magnitude of voltage that judges described sampling when described judge module, records the generation time of described magnitude of voltage and described magnitude of voltage;
Described acquisition module, also comprises:
Converting unit, while being negative voltage for the supply voltage obtaining when described acquisition module, is converted to positive voltage by described supply voltage;
Described sampling module specifically comprises:
The first converting unit, is converted to the manageable voltage of magnitude of voltage detection chip for the supply voltage that adopts transforming circuit that described acquisition module is obtained;
Sampling unit, for the voltage after described conversion is sampled, the magnitude of voltage after being sampled and the generation time of described magnitude of voltage, described magnitude of voltage precision is ± 0.2V in, the time precision of described generation time is in 1ms;
The second converting unit, for the magnitude of voltage after described sampling is converted to the manageable digital signal of micro-control unit MCU, and described digital signal is sent to described MCU, by described MCU, described digital signal is converted to corresponding magnitude of voltage, and record described magnitude of voltage and generation time, the supply voltage value of record and generation time are converted to digital signal, and if described supply voltage value exceed supply voltage normal range, in described digital signal, carry alerting signal;
Wherein, described equipment also comprises:
Communication module, after being isolated, described digital signal is transferred in equipment monitoring system or personal computer PC, described equipment monitoring system or PC are received after the digital signal of described MCU transmission, judge whether described digital signal carries alerting signal, if so, described equipment monitoring system or PC send alarm; And described equipment monitoring system or PC are received after the digital signal of described MCU transmission, and the digital signal receiving is converted to supply voltage value and generation time, in mains fluctuations curve, show;
Detection module, detects for the supply voltage that described acquisition module is obtained, and judges whether to occur power down, or, overshoot, or, transition; If so, send alerting signal, and record the magnitude of voltage of described supply voltage and the generation time of described magnitude of voltage;
When described detection module judges whether power down occurs, if be 0 for the magnitude of voltage of described supply voltage being detected, judge power-down conditions occurs;
Describedly judge whether that overshoot occurs to be comprised: if the magnitude of voltage detecting sometime becomes suddenly very high, judge overshoot condition occurs;
Describedly judge whether that transition occurs to be comprised: if the magnitude of voltage detecting sometime alters a great deal, judge the transition situation that occurs.
4. equipment as claimed in claim 3, is characterized in that, described the first logging modle also comprises:
The first display unit for recording after the generation time of described magnitude of voltage and described magnitude of voltage when described the first logging modle, according to the generation time of the magnitude of voltage of described record and described magnitude of voltage, shows in the curve of cyclical fluctuations figure of described supply voltage;
Correspondingly, described the second logging modle also comprises:
The second display unit for recording after the generation time of described magnitude of voltage and described magnitude of voltage when described the second logging modle, according to the generation time of the magnitude of voltage of described record and described magnitude of voltage, shows in the curve of cyclical fluctuations figure of described supply voltage;
Correspondingly, described detection module also comprises:
The 3rd display unit after recording the magnitude of voltage of described supply voltage and the generation time of described magnitude of voltage when described detection module, according to the generation time of the magnitude of voltage of described record and described magnitude of voltage, shows in the curve of cyclical fluctuations figure of described supply voltage.
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