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1. CN107478912 - Anti-interference processing method for vehicle-mounted charger to detect CP signals

Office Chine
Numéro de la demande 201710905419.5
Date de la demande 29.09.2017
Numéro de publication 107478912
Date de publication 15.12.2017
Numéro de délivrance 107478912
Date de délivrance 24.12.2019
Type de publication B
CIB
G01R 29/02
GPHYSIQUE
01MÉTROLOGIE; TESTS
RMESURE DES VARIABLES ÉLECTRIQUES; MESURE DES VARIABLES MAGNÉTIQUES
29Dispositions pour procéder aux mesures ou à l'indication de grandeurs électriques n'entrant pas dans les groupes G01R19/-G01R27/165
02Mesure des caractéristiques d'impulsions individuelles, p.ex. de la pente de l'impulsion, du temps de montée ou de la durée
G01R 23/02
GPHYSIQUE
01MÉTROLOGIE; TESTS
RMESURE DES VARIABLES ÉLECTRIQUES; MESURE DES VARIABLES MAGNÉTIQUES
23Dispositions pour procéder aux mesures de fréquences; Dispositions pour procéder à l'analyse de spectres de fréquences
02Dispositions pour procéder à la mesure de fréquences, p.ex. taux de répétition d'impulsions; Dispositions pour procéder à la mesure de la période d'un courant ou d'une tension
CPC
G01R 23/02
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
23Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
02Arrangements for measuring frequency, e.g. pulse repetition rate
G01R 29/02
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
29Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
02Measuring characteristics of individual pulses, e.g. deviation from pulse flatness, rise time, duration
G01R 29/023
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
29Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
02Measuring characteristics of individual pulses, e.g. deviation from pulse flatness, rise time, duration
023Measuring pulse width
Déposants SHENZHEN VMAX POWER CO., LTD.
上海威迈斯电源有限公司
Inventeurs LIU JUN
刘钧
FENG YINGYING
冯颖盈
ZHENG BIWEI
郑必伟
Mandataires 深圳市康弘知识产权代理有限公司 44247
深圳市康弘知识产权代理有限公司 44247
Titre
(EN) Anti-interference processing method for vehicle-mounted charger to detect CP signals
(ZH) 一种车载充电机检测CP信号的抗干扰处理方法
Abrégé
(EN)
The invention discloses an anti-interference processing method for a vehicle-mounted charger to detect CP signals. The method is characterized by comprising the following steps that firstly, the CP signals are acquired; secondly, whether each CP signal meets a preset pulse width or not is judged, the qualified CP signals meeting the preset pulse width are reserved; thirdly, the frequencies of the qualified CP signals are subjected to amplitude limiting; fourthly, the frequencies obtained after amplitude limiting are subjected to average filtering, and smooth sampling frequency values are obtained; fifthly, the smooth sampling frequency values are subjected to low-pass filtering; sixthly, whether the frequency values of the CP signals meet Chinese standard requirements or not is judged, if not, the acquisition is finished, and if yes, the duty cycle is calculated so as to continue to execute the next step; seventhly, the duty cycle obtained through calculation is subjected to low-pass filtering, a final CP signal is obtained, and the acquisition is finished. By means of the method, the stable CP signal still can be detected under the condition that the CP signals are severely interfered.

(ZH)
本发明公开了一种车载充电机检测CP信号的抗干扰处理方法,其特征在于,包括以下步骤:步骤1、捕获CP信号;步骤2、判断CP信号是否满足预设脉宽,保留满足预设脉宽的合格CP信号;步骤3、对合格CP信号的频率作限幅处理;步骤4、对限幅得到的CP信号进行平均滤波处理,得到平滑采样频率值;步骤5、对得到平滑采样频率值的CP信号进行低通滤波;步骤6、判断CP信号频率值是否满足国标要求,若不满足,则捕获结束,若满足则计算占空比,继续进行下一步;步骤7、对计算得到占空比的CP信号进行低通滤波处理,得到最终的CP信号,捕获结束。本发明在CP信号被严重干扰的情况下依然能检测到稳定的CP信号。

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