CN107478912A - A kind of anti-interference processing method of vehicle-mounted charge machine testing CP signals - Google Patents
A kind of anti-interference processing method of vehicle-mounted charge machine testing CP signals Download PDFInfo
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- CN107478912A CN107478912A CN201710905419.5A CN201710905419A CN107478912A CN 107478912 A CN107478912 A CN 107478912A CN 201710905419 A CN201710905419 A CN 201710905419A CN 107478912 A CN107478912 A CN 107478912A
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- 239000013256 coordination polymer Substances 0.000 title claims abstract description 56
- 238000003672 processing method Methods 0.000 title claims abstract description 13
- 238000012360 testing method Methods 0.000 title claims abstract description 8
- 238000012545 processing Methods 0.000 claims abstract description 9
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 238000005070 sampling Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 description 3
- 238000012216 screening Methods 0.000 description 3
- 238000012790 confirmation Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/02—Measuring characteristics of individual pulses, e.g. deviation from pulse flatness, rise time or duration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/02—Measuring characteristics of individual pulses, e.g. deviation from pulse flatness, rise time or duration
- G01R29/023—Measuring pulse width
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Meter Arrangements (AREA)
Abstract
The invention discloses a kind of anti-interference processing method of vehicle-mounted charge machine testing CP signals, it is characterised in that comprises the following steps：Step 1, capture CP signals；Step 2, judge whether CP signals meet default pulsewidth, retain the qualified CP signals for meeting default pulsewidth；Step 3, the frequency to qualified CP signals make amplitude limiting processing；Step 4, the frequency obtained to amplitude limit carry out average filter processing, obtain smooth sample frequency value；Step 5, LPF is carried out to smooth sample frequency value；Step 6, judge whether CP signal frequencies value meets Standard, if not satisfied, then capture terminates, dutycycle is calculated if meeting, is continued in next step；Step 7, low-pass filtering treatment is carried out to the dutycycle being calculated, obtain final CP signals, capture terminates.The present invention can still detect stable CP signals in the case where CP signals are by severe jamming.
Description
Technical field
The present invention relates to charging electric vehicle technical field, more particularly to a kind of the anti-of vehicle-mounted charge machine testing CP signals to do
Disturb processing method.
Background technology
The energy and the dual-pressure of environmental protection cause new energy car to increasingly become following automobile main flow, current new energy
Car owner will include hybrid electric, plug-in hybrid electric vehicle and pure electric vehicle again among these based on electric car.Mixing electricity
Motor-car does not need additional charging equipment, and the new energy energy comparison that it can be provided is small, and plug-in hybrid electric vehicle and pure electronic
Car is required for external charge equipment, and when using these external charge equipment, Vehicular charger and charging equipment usually require one
Individual CP signals interact generally has 4 kinds of states as control confirmation signal, CP signals：DC 12V、DC 9V、PWM 9V、PWM
6V, the different phase of different state representations charging.
The CP signals in PWM stages need to detect peak value, frequency and the dutycycle of CP signals.Conventional vehicle-mounted charge machine testing CP
The method of signal frequency and dutycycle is typically that the edge of CP signals is captured using single-chip microcomputer or DSP capturing unit, so as to
Obtaining frequency and dutycycle, this method can detect very accurate when CP signals are very clean, but due to being charged when electric car charges
CP when the condition of work difference of vehicle all can be to charging when stake is different, the working environment residing for charging pile is different and charges believes
Number produce different influence, and interference signal produced on CP signal wires, CP detections will be caused to produce very great fluctuation process, this
The progress of charging is have impact in certain degree, charging termination can be caused when serious, can not complete to charge.
Therefore, one kind how is designed in the case where CP signals are by severe jamming, and Vehicular charger still can be detected normally
The anti-interference processing method of CP signals is industry technical problem urgently to be resolved hurrily.
The content of the invention
In order to solve drawbacks described above present in prior art, the present invention proposes a kind of vehicle-mounted charge machine testing CP signals
Anti-interference processing method.
The technical solution adopted by the present invention is to design a kind of anti-interference processing method of vehicle-mounted charge machine testing CP signals,
It is characterised in that it includes following steps：
Step 1, Vehicular charger connection charging pile, and the CP signals sent in preset time to charging pile are repeatedly captured
Sampling；
Step 2, judge whether the pulse width of each C P signals meets default pulsewidth, retain the qualified CP for meeting default pulsewidth
Signal；
Step 3, the frequency to qualified CP signals make amplitude limiting processing, make it within default first standard frequency range；
Step 4, the frequency obtained to amplitude limit carry out average filter processing, obtain smooth sample frequency value；
Step 5, final CP signal frequencies value is obtained to smooth sample frequency value progress LPF；
Step 6, judge whether final CP signal frequencies value meets default second standard frequency range, if not satisfied, then capture knot
Beam, the dutycycle of CP signals is calculated if meeting, continued in next step；
Step 7, low-pass filtering treatment is carried out to the dutycycle being calculated, obtain final CP signals, capture terminates.
Preferably, the single-chip microcomputer or dsp chip of pwm signal can be captured by being provided with step 1 in Vehicular charger.
Preferably, the minimum value of the first standard frequency range is lower 500Hz than the minimum value of the second standard frequency range, and first
The maximum of standard frequency range is higher 500Hz than the maximum of the second standard frequency range.
Preferably, dutycycle is calculated according to final CP signal frequencies value and default pulsewidth in step 6.
Compared with prior art, the present invention is being carried out by carrying out amplitude limit, average filter processing to the CP signals detected
Pulsewidth screening, frequency screening and dutycycle screening, finally give satisfactory, stable CP signals.
Brief description of the drawings
With reference to embodiment and accompanying drawing, the present invention is described in detail, wherein：
Fig. 1 is the operation principle flow chart of anti-interference processing method in the present invention.
Embodiment
As shown in figure 1, anti-interference processing method proposed by the present invention, it is characterised in that comprise the following steps：
Step 1, Vehicular charger connection charging pile, Vehicular charger is interior to be provided with single-chip microcomputer or DSP, and single-chip microcomputer or DSP need to be carried
Pwm signal capturing function, the CP signals that Vehicular charger is sent by the CP signal wires of single-chip microcomputer or DSP capture charging piles, car
Carry the CP signals that are sent in preset time to charging pile of charger and carry out repeatedly capture sampling, preset time can be 1s, 2s or
Other values, capture that interlude is identical or stochastical sampling every time；
Its pulse width and frequency after step 2, CP signal captures are, it is known that judge whether the pulse width of each C P signals meets
Default pulsewidth, retains the qualified CP signals for meeting default pulsewidth, and the CP signals for being unsatisfactory for default pulsewidth abandon；
Step 3, the frequency to qualified CP signals make amplitude limiting processing, make it within default first standard frequency range；
Step 4, the frequency obtained to amplitude limit carry out average filter processing, obtain smooth sample frequency value；
Step 5, final CP signal frequencies value is obtained to smooth sample frequency value progress LPF；
Step 6, judge whether final CP signal frequencies value meets default second standard frequency range, the first standard frequency range
Minimum value is lower 500Hz than the minimum value of the second standard frequency range, and the maximum of the first standard frequency range is than the second standard frequency
The high 500Hz of maximum of rate scope, the second standard frequency range is more tightened up than the first standard frequency range, can be by the second standard frequency
Rate range set is national standard frequency range, i.e. 950Hz ~ 1050Hz, if final CP signal frequency values are unsatisfactory for the second standard frequency
Scope, then capture terminate, calculate dutycycle according to final CP signal frequencies value and default pulsewidth if meeting, continue next
Step；
Step 7, low-pass filtering treatment is carried out to the dutycycle being calculated, obtain final CP signals, capture terminates.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (4)
1. a kind of anti-interference processing method of vehicle-mounted charge machine testing CP signals, it is characterised in that comprise the following steps：
Step 1, Vehicular charger connection charging pile, and the CP signals sent in preset time to charging pile are repeatedly captured
Sampling；
Step 2, judge whether the pulse width of each C P signals meets default pulsewidth, retain the qualified CP for meeting default pulsewidth
Signal；
Step 3, the frequency to qualified CP signals make amplitude limiting processing, make it within default first standard frequency range；
Step 4, the frequency obtained to amplitude limit carry out average filter processing, obtain smooth sample frequency value；
Step 5, final CP signal frequencies value is obtained to smooth sample frequency value progress LPF；
Step 6, judge whether final CP signal frequencies value meets default second standard frequency range, if not satisfied, then capture knot
Beam, dutycycle is calculated if meeting, continued in next step；
Step 7, low-pass filtering treatment is carried out to the dutycycle being calculated, obtain final CP signals, capture terminates.
2. anti-interference processing method as claimed in claim 1, it is characterised in that being provided with step 1 in Vehicular charger to catch
Obtain the single-chip microcomputer or dsp chip of pwm signal.
3. anti-interference processing method as claimed in claim 1, it is characterised in that the minimum value of first standard frequency range
Lower 500Hz than the minimum value of the second standard frequency range, the maximum of first standard frequency range is than the second standard frequency
The high 500Hz of maximum of scope.
4. anti-interference processing method as claimed in claim 1, it is characterised in that dutycycle is according to final CP in the step 6
Signal frequency value and default pulsewidth are calculated.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710905419.5A CN107478912B (en) | 2017-09-29 | 2017-09-29 | Anti-interference processing method for detecting CP (content provider) signals by vehicle-mounted charger |
| PCT/CN2018/083747 WO2019062085A1 (en) | 2017-09-29 | 2018-04-19 | Anti-interference processing method during detection of cp signals by vehicle-mounted charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710905419.5A CN107478912B (en) | 2017-09-29 | 2017-09-29 | Anti-interference processing method for detecting CP (content provider) signals by vehicle-mounted charger |
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| Publication Number | Publication Date |
|---|---|
| CN107478912A true CN107478912A (en) | 2017-12-15 |
| CN107478912B CN107478912B (en) | 2019-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710905419.5A Active CN107478912B (en) | 2017-09-29 | 2017-09-29 | Anti-interference processing method for detecting CP (content provider) signals by vehicle-mounted charger |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107478912B (en) |
| WO (1) | WO2019062085A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019062085A1 (en) * | 2017-09-29 | 2019-04-04 | 深圳威迈斯电源有限公司 | Anti-interference processing method during detection of cp signals by vehicle-mounted charger |
| CN111610359A (en) * | 2020-05-29 | 2020-09-01 | 上海挚达科技发展有限公司 | Filtering method for controlling voltage acquisition of guide circuit by charging pile |
| CN113879164A (en) * | 2021-10-21 | 2022-01-04 | 江苏华鹏智能仪表科技股份有限公司 | Method for collecting signals of control guide circuit of alternating current charging equipment |
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| Publication number | Publication date |
|---|---|
| WO2019062085A1 (en) | 2019-04-04 |
| CN107478912B (en) | 2019-12-24 |
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Address after: 518000, 5 floor, Fengyun mansion, five road north, Nanshan District science and Technology Park, Shenzhen, Guangdong Applicant after: Shenzhen Vmax Power Co., Ltd. Address before: 518000, 4 floor, Fengyun mansion, five road north, Nanshan District science and Technology Park, Shenzhen, Guangdong Applicant before: Shenzhen Vmax Power Co., Ltd. |
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Address after: 5, building 518000, Fengyun building, No. five, North District, Nanshan District Science Park, Guangdong, Shenzhen, China Applicant after: Shenzhen Weimei New Energy Co., Ltd. Address before: 5, building 518000, Fengyun building, No. five, North District, Nanshan District Science Park, Guangdong, Shenzhen, China Applicant before: Shenzhen Vmax Power Co., Ltd. |
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Effective date of registration: 20191120 Address after: 201100 room 107, No. 479, Youdong Road, Minhang District, Shanghai Applicant after: Shanghai Weimeisi power supply Co., Ltd Address before: 5, building 518000, Fengyun building, No. five, North District, Nanshan District Science Park, Guangdong, Shenzhen, China Applicant before: Shenzhen Weimei New Energy Co., Ltd. |
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Address after: 201100 building 6, No. 4299, Jindu Road, Minhang District, Shanghai Patentee after: Shanghai Weimeisi new energy Co., Ltd Address before: 201100 room 107, No. 479, Youdong Road, Minhang District, Shanghai Patentee before: Shanghai Weimeisi power supply Co., Ltd |