It can realize the automatic measurement rainfall and sequence record history datum on time with the rtc ; the system can be taken notes history datum more than 1 month at least ; communication interface supported by the serial communication interface can link with the pc ' s rs232 , telephone network and mobile telephone network ; it can persist in working with backup power more than 1 day when the local junction circuit stops providing electricity
2.
As to the video signal , alarm signal , control signal , are all weak electricity signal , exceedingly easily be subjected to the jam , in case the power supply system does not steady , wave propag ation is greatly , the harmonic content of power source overtops , the veins wave factors are great unduly , and even power source equipment breakdown , outputting abnormal , will be about to affect the video signal image effect , and dependability cuts downs to the security and alarming system . we adopt fast fu lye ' s mutation rule - fft alternatives , by the way of carrying fft alternatives to the local junction circuit , regulated power supply , ups ' s power source , and switch power source , thereby diagnose every degree harmonious wave content of power souse , and abnormal coefficient , compared to the normal working situation . thereby diagnose out the working condition of the regulated power supply , ups ' s power source , and switch power source
मोबाइल