Application and development of automatic alarm and

Application and development of automatic fire alarm monitoring communication and connection technology

1.1 the communication protocol of automatic fire alarm system is nonstandard, the communication protocol is not open, the data format is not unified, and the information exchange at the non-standard technical level is not smooth.

communication protocol is the "rule" that the automatic fire alarm system must follow to complete information transmission. We have 1 suggestion to provide users with reference, confirmation and response, Only by relying on perfect and reasonable standards can the system realize the information interaction between system components and even in a broader sense, so as to expand and optimize the functions of the system. At present, the automatic fire alarm system with "various forms of bus system" as the mainstream has been popularized and promoted, but there is no design standard for the communication protocol of "bus automatic fire alarm system" in China. Due to different technical sources (introduction, cooperation, development and imitation), the miscellaneous and diverse communication protocols have caused many problems

1.1.1 the benign development of product R & D and manufacturing industry is difficult, and it is difficult to make full use of technical resources

(1) the R & D and manufacturing enterprises are closed to the development behavior of products, the application technology is miscellaneous, and the technical content varies greatly, so it is difficult to develop strengths and avoid weaknesses, reasonable and orderly, let alone synchronize with advanced technology and international standards. Due to the closeness of the system, the interchangeability of products from different manufacturers has not increased by 6% compared with 2013, and the expansion of system functions is difficult, which restricts the development of automatic fire alarm industry

(2) repeated development, information resources cannot be shared, resulting in repeated consumption of technology and resources, resulting in high product development costs and long cycles, and it is difficult to grasp market opportunities and stabilize the market

(3) the non standardization of communication protocol makes it difficult to realize the survival of the fittest in the strict sense because of the lack of unified standards for defining and appraising the quality of product technical performance, which not only hinders the application and development of new technology, but also pushes waves and helps enterprises' unfair competition in disguised form

1.1.2 lack of standard and sustainable technical support for system maintenance

(1) due to the lack of standardized and unified communication standards, different automatic fire alarm devices cannot be interchanged. Once the system needs to be repaired, replaced and cleaned, users may be forced to replace the damaged devices or choose products from other enterprises because the damaged devices cannot be repaired and replaced, Or allow the building automatic fire-fighting system to fail due to lack of due technical support. The former causes a waste of national property, while the latter forms a fire hazard

(2) due to the non-uniform communication protocol, users should pay attention to the fact that once users choose a product in the testing process, they will always be restricted by the enterprise

(3) due to the non-uniform communication protocol, it will cause obstacles for all kinds of automatic fire alarm products to be included in the standardized wide area network management, and the relevant national departments are also difficult to carry out necessary supervision, inspection and unified command on the operation of any automatic fire alarm

(4) with the economic development, two or more fire alarm hosts are running simultaneously in a building or a factory. How to manage these different manufacturers, different ages, different types and independent fire alarm systems is a headache

1.1.3 user operation and use difficulties

because there is no absolutely strong product dominating the fire alarm equipment market, and because the standards and specifications leave too much room for manufacturers to play, the host of the fire alarm equipment is not like a PC, but a thousand people and a thousand faces. Coupled with the product import factor, the user interface shows the "United Nations" effect; The user interface of the equipment itself is not friendly, and most of the daily users and operators do not have good professional and technical quality and foreign language ability, plus the frequent changes of personnel and the imperfection of the management system, so a large part of the fire-fighting facilities operate vaguely, which is neither good nor bad, and the user enthusiasm is not high

1.2 the problem of false alarm and missing alarm of automatic fire alarm system puzzles users.

the task of automatic fire alarm system for fire detection signal processing is to eliminate interference and judge the fire in a timely and correct manner. However, the installation environment of fire detectors is extremely complex. Due to the influence and irregularity of air flow, dust, moisture, electromagnetic field, electrical transient, static electricity and human interference in the environment, Its change characteristics are similar to the smoke or temperature change during fire. At present, the widely used sensors have inherent deficiencies in detecting fire, and can not accurately sense the unique sound waves, spectra, radiation, smell and many other aspects of various substances in the combustion process are not satisfactory. For example, ion and photoelectric smoke sensors can not only sense a wide "particle spectrum" of non fire phenomena, but also have some detection "blind areas" for smoke with different particle sizes and colors generated in the process of fire, which will seriously affect users' use

1.3 ultra early fire detection and alarm technology needs to further expand the field of detection services

for the importance and particularity of special protected objects, foreign countries have developed high-sensitivity smoke fire detection and alarm systems suitable for clean spaces, such as laser type high-sensitivity smoke fire detectors Inspiratory high-sensitivity smoke fire detection follow the technicians of Jinan new era Gold Testing Instrument Co., Ltd. to see the working environment of the spring fatigue tester and the usual protection of the equipment: alarm system and gas fire detection alarm system. Compared with ordinary fire detection and alarm system, its detection sensitivity is improved by two orders of magnitude, or even more. These systems use laser particle counting, laser scattering and other principles to monitor the protected space, and judge whether there is a fire by the increase of particles in the unit volume. The system can identify the potential fire hazard within a few hours or days before the fire, and now it is ultra early fire alarm. At present, this technology is limited to the detection of smoke particles. Its application is limited by the environment of the application place to varying degrees. It is better in the fire detection of clean space. In some places with common environmental conditions, there are still problems in the application of high-sensitivity inspiratory fire detection and alarm system