Design Of Electronic Patrol System

At present, the patrolman, who goes on a tour of inspection termly or aperiodically to special district, a storied buildings, equipments and goods, can be seen everywhere in daily life. However, the institutionalism of patrol manage is hard to verify path, time and avoid the cogged action as redeem or repetitious sign. Once the question appears, the managers can't distinguish the duty. Based on the case, the true case of the electronic patrol system when the patrolman executes the work is discussed in this dissertation. The electronic patrol is more efficient measure to supervise the process of patrol.The electronic patrol system adopts the technology of contactless IC card and uses telephone line to transmit data. And the electronic patrol instrument itself has the function of showing and printing via parallel interface. Meanwhile, it has the characteristic of contactless, keeping secrets, auto-dial and so on.Because reading button does not need contacting, the system can work in dirty, wet, cold, hot and other severe environment. And it can avoid destroying the information button. In this system, the reader of MF RC500 contactless IC card has the function of authenticating the secret code three times and the ability of keeping secrets.The system has the function of using telephone line to transmit data, so it can transmit the patrol information to the control center in time and doesn't need report the case to the control center every day.However, some miniature corporations need one or two patrol instruments to finish the task in order to don't buy PC for saving spending. But the memory capability of patrol system is limited. After a period time, the information of the past cannot be saved. In view of existing situation, this system links the patrol instrument and printer using parallel interface. In this way, the patrol instrument can print independently with the connection.