CN101799487A - 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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- CN101799487A CN101799487A CN 200910003881 CN200910003881A CN101799487A CN 101799487 A CN101799487 A CN 101799487A CN 200910003881 CN200910003881 CN 200910003881 CN 200910003881 A CN200910003881 A CN 200910003881A CN 101799487 A CN101799487 A CN 101799487A
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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 continuous development of the communication technology, communication facilities is more and more higher to the performance and the accuracy requirement of power supply, so need the parameter of power supply be detected, especially the voltage to power supply detects.
Communication facilities can provide overvoltage, the undervoltage alarm measuring ability to power supply at present, judge in view of the above power supply whether the normal voltage scope (be generally-36Vdc～-72Vdc) within, when the input voltage of power supply is lower than the minimum voltage value or is higher than maximum voltage value, communication facilities reports the voltage Threshold Crossing Alert, and this detection method is a voltage alarming threshold detection method.
Except that communication facilities can be realized voltage Threshold Crossing Alert function, communications equipment room power-equipment and communication power supply equipment also can provide supply voltage Threshold Crossing Alert function, and the magnitude of voltage measuring ability is provided.
In realizing process of the present invention, the inventor finds that above-mentioned prior art has following shortcoming and defect at least:
Voltage alarming threshold detection method only provides overvoltage, undervoltage alarm measuring ability to power supply, and can not gather and write down scope, abnormal voltage value and the generation time of concrete mains fluctuations; Though communications equipment room power-equipment and communication power supply equipment can provide the magnitude of voltage measuring ability, its accuracy of detection is limited, and voltage accuracy is more than 1.5V usually, and time precision can not detect the transient fluctuation situation and the generation time of supply voltage more than 1 second.
Summary of the invention
The embodiment of the invention provides a kind of method and apparatus that detects mains fluctuations, has solved in the prior art, the magnitude of voltage that can not the accurate recording supply voltage and the problem of generation time.Described technical scheme is as follows:
The embodiment of the invention provides a kind of method that detects mains fluctuations, and method comprises:
Obtain the supply voltage of power-supply device;
Supply voltage is sampled the magnitude of voltage after obtaining sampling and the generation time of magnitude of voltage;
Judge the whether normal range of beyond supply voltage of magnitude of voltage;
If, 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.
The embodiment of the invention provides a kind of equipment that detects mains fluctuations, and equipment comprises:
Acquisition module is used to obtain the supply voltage of power-supply device;
Sampling module is used for the supply voltage that acquisition module obtains is sampled, the magnitude of voltage after obtaining sampling and the generation time of magnitude of voltage;
Judge module, whether the magnitude of voltage that is used to judge the sampling module sampling normal range of beyond supply voltage;
First logging modle is used for the normal range when the magnitude of voltage beyond supply voltage of judge module judgement sampling, the generation time of recording voltage value and magnitude of voltage;
Alarm module is used for sending alerting signal when judge module is judged the normal range of the magnitude of voltage beyond supply voltage of sampling;
Second logging modle.Be used for when judge module judges that the magnitude of voltage of sampling does not have the normal range of beyond supply voltage the generation time of recording voltage value and magnitude of voltage.
The beneficial effect that the technical scheme that the embodiment of the invention provides is brought is:
The method that the embodiment of the invention provides, realized supply voltage value is accurately sampled, the scope of recording power voltage fluctuation, abnormal voltage value and generation time, and can the output voltage curve of cyclical fluctuations, exceed under normal voltage scope and the generation moment situation at supply voltage, can be in time accurate unusual magnitude of voltage and the time value of recording power, and abnormality alarming reported main frame or webmaster, for analyzing and mains fluctuations problem in location is provided convenience.
Description of drawings
Fig. 1 is the method flow synoptic diagram that the embodiment of the invention 1 provides;
Fig. 2 is the circuit diagram of the detection mains fluctuations that provide of the embodiment of the invention 2;
Fig. 3 is the method flow synoptic diagram that the embodiment of the invention 2 provides;
Fig. 4 is the mains fluctuations curve synoptic diagram that the embodiment of the invention 2 provides;
Fig. 5 is the equipment synoptic diagram that the embodiment of the invention 3 provides.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention is clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.
Embodiment 1
In order to realize accurately to 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 invention provides a kind of method that detects mains fluctuations, referring to Fig. 1, this method comprises:
101: the supply voltage that obtains power-supply device;
102: supply voltage is sampled the magnitude of voltage after obtaining sampling and the generation time of magnitude of voltage;
103: judge the whether normal range of beyond supply voltage of magnitude of voltage;
If, 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, obtain after the supply voltage of power-supply device, method also comprises:
Supply voltage is detected, judge whether to take place power down, or, overshoot, or, transition;
If, send alerting signal, and the generation time of the magnitude of voltage of recording power voltage and magnitude of voltage.
Wherein, supply voltage is sampled, the magnitude of voltage after obtaining sampling 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 the conversion is sampled the magnitude of voltage after obtaining sampling and the generation time of magnitude of voltage;
Magnitude of voltage after the sampling is converted to digital signal.
Wherein, if 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 send alerting signal, and after the generation time of the magnitude of voltage of recording power voltage 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, 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 invention provides, realized supply voltage value is accurately sampled, the scope of recording power voltage fluctuation, abnormal voltage value and generation time, and can the output voltage curve of cyclical fluctuations, exceed under normal voltage scope and the generation moment situation at supply voltage, can be in time accurate unusual magnitude of voltage and the time value of recording power, and abnormality alarming reported main frame or webmaster, for analyzing and mains fluctuations problem in location is provided convenience.
Embodiment 2
Referring to Fig. 2, the embodiment of the invention provides a cover to detect the Circuits System of mains fluctuations, this cover circuit mainly is divided into four parts: polar switching module, 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), the polar switching module, major function be will the input negative supply voltage be converted to positive voltage; If positive supply is monitored, this part can be removed.
2), the magnitude of voltage detection module, wherein include the magnitude of voltage detection chip in the magnitude of voltage detection module, at first detected supply voltage is converted to the treatable voltage range of magnitude of voltage detection chip, such as 0～5VDC, the embodiment of the invention is not limited to this voltage range; Voltage after will transforming again sends to the magnitude of voltage detection chip and detects; The magnitude of voltage detection chip reports MCU (Micro Controller Unit, micro-control unit) with detected magnitude of voltage and handles, wherein, the detected voltage detecting precision of magnitude of voltage detection chip is ± 0.2V in.
3), power supply transient detection module, can detect input power supply power-fail, overshoot, transition situation moment, when input power supply generation power down, overshoot, fluctuation, transition situation, the power supply transient detection module just directly stops other trace routines of MCU, MCU then gets off this logout, and report the power supply transient alarm to device detection system or PC (Personal Computer, personal computer) machine, detect and do not need to carry out again magnitude of voltage.
4), communication module, can realize that MCU communicates 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 influence the normal use of peripherals when making signal output.
Below in conjunction with the each part mentioned above circuit, the method that the embodiment of the invention is provided is described in detail, and referring to Fig. 3, the specific implementation process is as follows:
201: the negative supply voltage that the polar switching module will be imported power supply output is converted to positive voltage, and the positive voltage after will changing sends to magnitude of voltage detection module and power supply transient detection module respectively;
Wherein, all be negative voltage owing to generally import the voltage of power supply output, so need be positive voltage with this negative voltage transition by the polar switching module, the voltage of exporting as the input power supply be-48V then to become 48V through voltage after the polar switching module.Voltage for the output of input power supply is the situation of positive voltage, can not carry out this step.
202: the positive voltage that magnitude of voltage detection module receiving polarity modular converter sends, execution in 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 in step 203; And the positive voltage that power supply transient detection module receiving polarity modular converter sends judges whether this voltage is anomalous event, and detailed process is as follows:
After if the power supply transient detection module receives this supply voltage, the magnitude of voltage that detects this supply voltage is 0, then judges to produce power-down conditions, at this moment
202a: the power supply transient detection module sends exception reporting to MCU;
After 202b:MCU receives this unusual occurrence report, stop other trace routine at once, and write down this anomalous event and corresponding generation time, this anomalous event and corresponding generation time are sent to equipment monitoring system or PC;
202c: equipment monitoring system or PC send the alarm notification staff and handle after receiving the generation time of this anomalous event and correspondence, 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 the power supply overshoot, the magnitude of voltage that the power supply transient detection module detects sometime becomes very high suddenly, then judge and produce abnormal conditions this moment, 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 the power supply transient detection module detects sometime alters a great deal, and then judges to produce abnormal conditions this moment, and its processing procedure is identical with the situation of power supply power-fail, repeats no more.
If the power supply transient detection module does not detect the anomalous event as above-mentioned power down, overshoot or transition, then the power supply transient detection module will not deal with the supply voltage that receives.
203: the magnitude of voltage detection module is converted to the manageable voltage of magnitude of voltage detection chip with the positive voltage that receives;
Wherein, the magnitude of voltage detection module at first is transformed into the supply voltage that receives 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 invention does not limit the processes voltage scope of magnitude of voltage detection chip, can select different magnitude of voltage detection chip, then correspondent voltage process range difference according to actual conditions.
204: the magnitude of voltage detection module is sampled the magnitude of voltage after obtaining sampling to the supply voltage after changing;
Wherein, after the magnitude of voltage detection module was converted to the manageable voltage of magnitude of voltage detection chip with positive voltage, the magnitude of voltage detection chip was sampled the magnitude of voltage after obtaining sampling to the supply voltage after changing; Wherein, the accuracy of detection of the magnitude of voltage detection chip in the embodiment of the invention be ± 0.2V in.
205: the magnitude of voltage after the magnitude of voltage detection module will be sampled is converted to the manageable digital signal of MCU, and the digital signal after will changing sends to MCU;
Wherein, the magnitude of voltage detection module is according to preset conversion rule, magnitude of voltage after the sampling is converted to the manageable digital signal of MCU, for example the sample voltage value of general-48Vdc is converted to 0011,0110, and 0100,1111, the embodiment of the invention does not limit the concrete mode that is adopted when magnitude of voltage after will sampling is converted to digital signal, can be certain algorithm, can be arbitrary other transformation rules yet.
206:MCU receives the digital signal that the magnitude of voltage detection module sends, and this digital signal is converted to corresponding voltage value, and judges whether this magnitude of voltage exceeds the supply voltage normal range, if write down this magnitude of voltage and generation time and carry alerting signal; Otherwise, write down this magnitude of voltage and generation time.
Wherein, MCU receives the digital signal that the magnitude of voltage detection module sends, and the digital signal that receives is handled, and this digital signal is converted to corresponding voltage value;
When this magnitude of voltage exceeds the supply voltage normal range, comprise magnitude of voltage and the generation time that is lower than minimum voltage, the magnitude of voltage that is higher than maximum voltage and generation time, then write down this magnitude of voltage and generation time and carry alerting signal simultaneously, wherein, all in ± 0.2V, the time precision of the generation time that is write down is all in 1ms for the magnitude of voltage precision that is write down.
For example: the normal range of supply voltage is 36V～72V, if the magnitude of voltage that receives is 24V, then the time of this magnitude of voltage 24V and generation 24V magnitude of voltage is write down together and carries alerting signal simultaneously; If the magnitude of voltage that receives is 86V, then the time of this magnitude of voltage 86V and generation 86V magnitude of voltage is also write down together and carry alerting signal simultaneously.
When this magnitude of voltage does not exceed the supply voltage normal range, then MCU directly writes down this magnitude of voltage and generation time.
207:MCU is converted to digital signal with the supply voltage value and the generation time of record, by communication module digital signal is sent to equipment monitoring system or PC, and preserves this digital signal.
Wherein, MCU will write down supply voltage value and generation time be converted to digital signal, if wherein this magnitude of voltage exceeds the supply voltage normal range, then carry alerting signal in this digital signal; The electrical isolation unit of this digital signal through communication module isolated, do not influence the normal use of peripherals when making digital signal output; Again by usb communication or serial communication, with digital data transmission in equipment monitoring system or PC; MCU is kept at digital signal in the FLASH unit.
208: equipment monitoring system or PC receive the digital signal that MCU sends, and judge whether this digital signal carries alerting signal, if then equipment monitoring system or PC send alarm, and execution in step 209; Otherwise, direct execution in step 209;
Wherein, equipment monitoring system or PC if this digital signal is carried alerting signal, then send warning after receiving the digital signal of MCU transmission, notify staff's supply voltage this moment to exceed supply voltage normal range needs and in time handle.
209: equipment monitoring system or PC are converted to supply voltage value and generation time with the digital signal that receives, and according to this supply voltage value and generation time, show in the mains fluctuations curve map.
Wherein, after equipment monitoring system or PC are converted to supply voltage value and generation time with the digital signal that receives, 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 clearly that supply voltage is in difference fluctuation situation constantly.
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, power source voltage becomes 0 suddenly, and power supply power-fail has taken place; At t
10Constantly, it is very high that power source voltage becomes suddenly, and the power supply overshoot has taken place; At t
11Constantly, power source voltage alters a great deal suddenly, and power supply transient has taken place.
The method that the embodiment of the invention provides, realized supply voltage value is accurately sampled, the scope of recording power voltage fluctuation, abnormal voltage value and generation time, and can the output voltage curve of cyclical fluctuations, exceed under normal voltage scope and the generation moment situation at supply voltage, can be in time accurate unusual magnitude of voltage and the time value of recording power, and abnormality alarming reported main frame or webmaster, for analyzing and mains fluctuations problem in location is provided convenience.
Embodiment 3
The embodiment of the invention provides a kind of equipment that detects mains fluctuations, and referring to Fig. 5, this equipment comprises:
Acquisition module 301 is used to obtain the supply voltage of power-supply device;
Sampling module 302 is used for the supply voltage that acquisition module 301 obtains is sampled, the magnitude of voltage after obtaining sampling and the generation time of magnitude of voltage, the function of this module such as the magnitude of voltage detection module among Fig. 3;
Judge module 303, whether the magnitude of voltage that is used to judge sampling module 302 samplings the normal range of beyond supply voltage;
First logging modle 304 is used for the normal range when the magnitude of voltage beyond supply voltage of judge module 303 judgement samplings, the generation time of recording voltage value and magnitude of voltage;
Alarm module 305 is used for sending alerting signal when judge module 303 is judged the normal range of the magnitude of voltage beyond supply voltage of sampling;
Second logging modle 306 is used for when judge module 303 judges that the magnitude of voltage of sampling does not have the normal range of beyond supply voltage the generation time of recording voltage value and magnitude of voltage.
Wherein, equipment also comprises:
Detection module is used for the supply voltage that acquisition module 301 obtains is detected, and judges whether to take place power down, or, overshoot, or, transition; If, send alerting signal, and the generation time of the magnitude of voltage of recording power voltage and magnitude of voltage, the function of this module such as the power supply transient detection module among Fig. 3.
Wherein, sampling module 302 specifically comprises:
First converting unit is used for the supply voltage that acquisition module 301 obtains is converted to the manageable voltage of magnitude of voltage detection chip;
Sampling unit is used for the voltage after the conversion is sampled the magnitude of voltage after obtaining sampling and the generation time of magnitude of voltage;
Second converting unit is used for the magnitude of voltage after the sampling is converted to digital signal.
Wherein, first logging modle 304 also comprises:
First display unit is used for behind the generation time of 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, second logging modle 306 also comprises:
Second display unit is used for behind the generation time of 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 is used for according to the magnitude of voltage of record and the generation time of magnitude of voltage, showing in the curve of cyclical fluctuations figure of supply voltage after the generation time of the magnitude of voltage of detection module recording power voltage and magnitude of voltage.
Wherein, acquisition module 301 also comprises:
Converting unit when the supply voltage that is used for obtaining when acquisition module 301 is negative voltage, is converted to positive voltage with supply voltage, the function of this unit such as the polar switching module among Fig. 3.
The equipment that the embodiment of the invention provides, realized supply voltage value is accurately sampled, the scope of recording power voltage fluctuation, abnormal voltage value and generation time, and can the output voltage curve of cyclical fluctuations, exceed under normal voltage scope and the generation moment situation at supply voltage, can be in time accurate unusual magnitude of voltage and the time value of recording power, and abnormality alarming reported main frame or webmaster, for analyzing and mains fluctuations problem in location is provided convenience.
The embodiment of the invention can utilize software to realize that corresponding software programs can be stored in the storage medium that can read, for example, and in the hard disk of router, buffer memory or the CD.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
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 obtaining sampling and the generation time of described magnitude of voltage;
Judge whether described magnitude of voltage surpasses the normal range of described supply voltage;
If write down the generation time of described magnitude of voltage and described magnitude of voltage, and send alerting signal;
Otherwise, write down the generation time of described magnitude of voltage and described magnitude of voltage.
2. the method for claim 1 is characterized in that, after the described supply voltage that obtains power-supply device, described method also comprises:
Described supply voltage is detected, judge whether to take place power down, or, overshoot, or, transition;
If send alerting signal, and write down the magnitude of voltage of described supply voltage and the generation time of described magnitude of voltage.
3. the method for claim 1 is characterized in that, described described supply voltage is sampled, and the magnitude of voltage after obtaining sampling and the generation time of described magnitude of voltage specifically comprise:
Described supply voltage is converted to the manageable voltage of magnitude of voltage detection chip;
Voltage after the described conversion is sampled the magnitude of voltage after obtaining sampling and the generation time of described magnitude of voltage;
Magnitude of voltage after the described sampling is converted to digital signal.
4. as claim 1 and 2 described methods, it is characterized in that, described if, write down after the generation time of described magnitude of voltage and described magnitude of voltage, also comprise:
According to the magnitude of voltage of described record and the generation time of described magnitude of voltage, in the curve of cyclical fluctuations figure of described supply voltage, show;
Correspondingly, described otherwise, write down after the generation time of described magnitude of voltage and described magnitude of voltage, also comprise:
According to the magnitude of voltage of described record and the generation time of described magnitude of voltage, in the curve of cyclical fluctuations figure of described supply voltage, show.
Correspondingly, described if, send alerting signal, and write down after the generation time of the magnitude of voltage of described supply voltage and described magnitude of voltage, also comprise:
According to the magnitude of voltage of described record and the generation time of described magnitude of voltage, in the curve of cyclical fluctuations figure of described supply voltage, show.
5. the method for claim 1 is characterized in that, 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.
6. an equipment that detects mains fluctuations is characterized in that, described equipment comprises:
Acquisition module is used to obtain the supply voltage of power-supply device;
Sampling module is used for the supply voltage that described acquisition module obtains is sampled, the magnitude of voltage after obtaining sampling and the generation time of described magnitude of voltage;
Judge module is used to judge whether the magnitude of voltage of described sampling module sampling surpasses the normal range of described supply voltage;
First logging modle is used for judging the magnitude of voltage of described sampling when described judge module and surpasses the normal range of described supply voltage, writes down the generation time of described magnitude of voltage and described magnitude of voltage;
Alarm module is used for sending alerting signal when described judge module judges that the magnitude of voltage of described sampling surpasses the normal range of described supply voltage;
Second logging modle is used for writing down the generation time of described magnitude of voltage and described magnitude of voltage when described judge module judges that the magnitude of voltage of described sampling does not surpass the normal range of described supply voltage.
7. equipment as claimed in claim 6 is characterized in that, described equipment also comprises:
Detection module is used for the supply voltage that described acquisition module obtains is detected, and judges whether to take place power down, or, overshoot, or, transition; If send alerting signal, and write down the magnitude of voltage of described supply voltage and the generation time of described magnitude of voltage.
8. equipment as claimed in claim 6 is characterized in that, described sampling module specifically comprises:
First converting unit is used for the supply voltage that described acquisition module obtains is converted to the manageable voltage of magnitude of voltage detection chip;
Sampling unit is used for the voltage after the described conversion is sampled, the magnitude of voltage after obtaining sampling and the generation time of described magnitude of voltage;
Second converting unit is used for the magnitude of voltage after the described sampling is converted to digital signal.
9. equipment as claimed in claim 6 is characterized in that, described first logging modle also comprises:
First display unit is used for after described first logging modle writes down the generation time of described magnitude of voltage and described magnitude of voltage, according to the magnitude of voltage of described record and the generation time of described magnitude of voltage, shows in the curve of cyclical fluctuations figure of described supply voltage;
Correspondingly, described second logging modle also comprises:
Second display unit is used for after described second logging modle writes down the generation time of described magnitude of voltage and described magnitude of voltage, according to the magnitude of voltage of described record and the generation time of 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 is used for according to the magnitude of voltage of described record and the generation time of described magnitude of voltage, showing in the curve of cyclical fluctuations figure of described supply voltage after described detection module writes down the generation time of the magnitude of voltage of described supply voltage and described magnitude of voltage.
10. equipment as claimed in claim 6 is characterized in that, described acquisition module also comprises:
Converting unit when the supply voltage that is used for obtaining when described acquisition module is negative voltage, is converted to positive voltage with described supply voltage.
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| CN106324320B (en) * | 2016-08-11 | 2018-11-27 | 国网浙江省电力公司宁波供电公司 | The duration curve approximating method and voltage dip Severity method of multiple voltage dip |
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| CN1101938C (en) * | 1996-03-20 | 2003-02-19 | 珩顺电子有限公司 | Continuous scan recording method capable of monitoring plurality of batteries simultaneously |
| CN1293441C (en) * | 2002-06-10 | 2007-01-03 | 联想(北京)有限公司 | System and method for real time collecting and processing current and voltage of power supply of clauster |
| JP4296811B2 (en) * | 2003-03-25 | 2009-07-15 | 株式会社デンソー | Physical quantity sensor device |
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