An industry overview: With the progress and development of society, people in terms of security awareness and requirements are also increasing, had only a few specific areas (such as oil depots, chemical storage of flammable and explosive places like) 24 hours around the clock patrol inspection system was implemented, has now been adopted by many of the upscale residential district, hotels and other industries; in order to make "all-weather patrol 24 hours" does not become a slogan, but also the majority of the owners of the property management The company assured that many property companies have configured the patrol system, so that patrol around the clock to get the real implementation of the daily work in front of the patrol inspection report has been fully confirmed. Patrol system appears not only in the above areas have been fully applied, and all with frequency, time-related industries and fields have been a strong response, these units also showed interest. But people on patrol system is not very thorough understanding of the impact of the expansion of applications. Second, the patrol system and its classification: Patrol: Patrol personnel in accordance with the provisions of the patrol routes, must arrive at a predetermined time period patrol routes each address point and complete the inspections specified area over a period of time, that is, usually referred to point inspections. Inspection plan: according to the actual needs of users, for patrol officers to develop within the specified time to a predetermined area inspections mission, planned list of inspection points: in the inspection program, requiring patrol officers arrived at the specified time required The designated locations. Patrol System: the use of some auxiliary equipment to help management to develop inspection plans and work to understand patrol officers, thereby improving the quality of supervision and management system. Third, the current patrol system on the market fall into two categories: ★ Online patrol system: ongoing patrol officers patrol route and arrival time of each patrol point with the display in the central control room can be recorded in real time patrol. More officer with a walkie-talkie, you can call at any time contact with the central control room on-line patrol system shortcomings are: the need for wiring, a large amount of construction, high cost; installed in the outdoor line transmission of data vulnerable to man-made or natural destruction, to be set up special duty, and real-time monitoring of computer systems, high maintenance costs; has renovated the building and then configure on-line patrol system even more difficult. ★ Off-patrol system: no wiring, patrol officers handheld data collection device to collect information of each patrol point its easy to install, reliable, suitable for any areas that require security patrols or off-duty patrol patrol system. drawback: the work of patrol officers can not be fed back to the central control room at any time, but if they can patrol officers with walkie-talkies can make up for its shortcomings. Off-patrol system as easy to operate, compared with the cost of the province, more than 95% of the country is currently selected by the user is off-line electronic patrol system. ◆ induction Patrol System: Since the data collection shell material are plastic materials, its light weight, low cost, but the collection of information need to spend a lot of energy, often need to use the process to replace the battery; susceptible to magnetic interference and poor water resistance does not meet the continuous operation in harsh environments, so it is not widely adopted. ◆ touch-type digital Patrol System: currently more widely used, relatively good performance is the use of the information button DALLAS United States, when the inspection, as long as the information collected gently touch the information button, put the position on the Information button and time information is automatically recorded as a touch of the data. and accompanied by sound and light tips, power consumption is very low. DALLAS information button is: a corrosion resistant stainless steel bottom is sealed in the memory chip. Its airtight film a group of 64 pre-digit identification number, and each number in the information button can not be repeated. Long-term continuous operation in harsh environments -25 ℃ ~ + 80 ℃ in. This from a patrol Patrol System can be divided into three categories on even better housing material: plastic, aluminum, stainless steel and aluminum materials because plastic is weak at high salinity, interference, impact resistance, etc., and patrol officers themselves generated resentment , will result in product failure rate occurred in the course of the high, while stainless steel housing patrol stick on relatively waterproof, anti-interference ability and the impact is relatively strong, it is more reliable patrol rod failure rate is relatively low.