Public time measurement has always occupied an important position in human production and life. In traditional Chinese urban planning and construction, bell tower and drum tower are the core buildings, and they are also the rudiments of modern tower clocks. The real tower clock originated in Europe, with the gradual development and growth of the Western watch industry, from the perspective of technological development, the tower clock can be divided into four generations. First generation, mechanical tower clock. The use of clockwork, gear and other mechanical structures to achieve the clock time, need a lot of manpower daily maintenance, so the noise is more, the cost is high. The world famous Great Britain
Built in 1858, this clock is a representative mechanical tower clock that needs a complete overhaul every few years. Second generation, mechanoelectronic tower clock. With the development of electronic and electrical technology, the tower clock also reduces the huge mechanical parts, and a large number of electronic and motor parts are used, which effectively reduces the cost and improves the travel time accuracy. Compared with the first generation of pure mechanical tower clock, the second generation tower clock has made great progress in accuracy, cost and life, but because there is only a local clock source, the problem of travel time accuracy is still not really solved.
Second generation, GPS tower clock. In the 1990s, GPS began to be applied to various industries, and the tower clock based on GPS is the modern tower clock in the real sense. Because it uses GPS satellite timing technology, it can realize automatic clock correction and reduce human maintenance costs, so it is quickly recognized by the market, GPS/ Beidou has become a necessary function of the tower clock, but the GPS signal is not completely stable, while the pointer is lost, maintenance difficulties and other problems still exist, the third generation product is not perfect. Fourth generation, Internet of Things tower clock. In the era of cloud computing and mobile Internet in the 21st century, the accuracy of GPS/ Beidou travel time is only the basic function of the tower clock. Users have put forward higher requirements for the tower clock: more accurate timing methods, more beautiful and lightweight structure, smaller installation volume, lower and greener use cost, anytime and anywhere security control, real-time online video surveillance, real 365 days maintenance-free..... All this can only be effectively met by the 4G/5G based Internet of Things tower clock, and the Internet of Things provides unlimited possibilities for the functional expansion of the tower clock. Most of the domestic tower clock manufacturers use the third generation of tower clock products, a small number of manufacturers have completely switched to the fourth generation of products, among which the 4G15G Internet of Things tower clock control system and public clock Internet of Things platform launched by Huasang Clock, abandoning the traditional RS485, cable and other complex and problem-prone wired deployment mode. Through mobile APP, small program and other wireless forms of control, a deployment, control at any time, lifetime maintenance-free, excellent quality has been widely recognized by the market.
