November 15, 2023
ForewordHello everyone, I'm Mr. Lin, this article takes a demonstration project as an example, chooses a road with a total length of 720 meters in east and west of W Park as a demonstration and development 30 smart lights Pole solution realizes six functions of smart lighting, WIFI network, information release, public broadcasting, video surveillance and emergency. Text The economic and social benefits of smart lampposts are then analyzed based on this design example, in combination with relevant local information. Finally, methods of "integrated deployment" and "traditional integration" used in implementation of smart lamp poles are compared to provide a guideline for deployment distance of each functional module of smart lamp poles in park scene, as well as design and construction methods. smart lampposts are offered.
Scheme Design
1. Overview
Street lights are an important part of park as a park infrastructure. Smart lamp poles use advanced technologies such as Internet of Things and cloud computing to connect widely distributed street lights and become Internet of Things for street. lighting covering a large area of the park. The level of intelligence, information and sophistication of park management plays a significant role in reducing cost of operation and maintenance.
The smart lamp pole system consists of a perception interaction layer, a communication transfer layer, a protocol control layer, and a business application layer. The system architecture is shown in figure below:
Fig. 1. Architectural diagram of intelligent lamppost system
In this smart street lighting scheme, a section of roads in east and west parts of Park W was selected for designing smart street lights. The total length of roads in east part is about 322.1 meters. consequences.
Fig. 1. Distribution map of smart street lights
Second, dot layout
According to relevant specifications, lampposts are located on one side at a distance of 25 meters, a total of 30 lampposts of 7 meters are installed. This smart lamp post system realizes 6 main functions, including smart lighting and WIFI network, with a total of 83 modules. The requirements and layout spacing of each functional module are shown in following table:
Table 1. Layout requirements for each functional module of a smart lamppost
Combined with deployment points of each functional module, 12 types of smart lampposts with different built-in functions are obtained. The combinations and numbers of corresponding built-in modules are as follows:
Table 2. Smart Pole Module Configuration Table
Note: Numbers 1-16 refer to forest stands in western part, and numbers 17-30 refer to square of viability in eastern part.
3. Scale of investment
W Park designed 30 7m smart light poles with 83 functional modules for this smart pole system. After asking manufacturer, prices for each part of smart pole system are as follows:
Table 3 Scale of Investment in Smart Light Pole System
It is estimated that total investment of W Park's smart light pole system is about 1.412 million yuan.
Benefit Analysis
1. Cost Analysis
Including materials, transportation, construction, etc., total cost of a traditional 7-meter street lamp in area where park is located is about 5,000 yuan per piece. The cost has some increase compared to traditional street lamp. lights.
After market research, average cumulative cost of one smart street light pole is about 47,000 yuan, which is 1.262 million yuan more than traditional street light.
Second, saving analysis
Through intelligent and intelligent transformation of street lights, park management will reduce operating costs in following aspects
Energy cost savings. Let's take 250W sodium lamps as an example. After upgrading smart street light (LED60W), one lamp will work 12 hours a day and be fully lit. from 6:00 to 10:00 every night, power is reduced by 70% from 10:00 to 12:00 and by 30% from 12:00 to 6:00 in morning.
Based on cost of 1 yuan/kWh, each lamp can save about 937.32 yuan per year, for a total saving of 28,100 yuan per year.
Operational Savings: The construction of smart lampposts has increased level of information management in park. The status of lampposts and modules can be monitored in background, reducing data collection and street lighting effort. light inspections.
Revenue Analysis
Apart from saving management costs and fleet operators, deploying smart lamp poles can also bring certain benefits through its own functional modules, such as: video network, WIFI push, screen advertising, microbase. station revenue, etc.
Payback period
Comprehensively considering investment and benefits of a smart light pole system, we can get:
Table 4 Calculation of payback period for a system of park intelligent lampposts
Based on above calculations, static investment period for W Park's smart light pole system is 1.55 years.
Social benefit analysis
1. Create park highlights
The construction of smart innovation lampposts is based on informatization needs of park managers and tourists. Experience convenience that distinguishes traditional parks.
At same time, beautiful shape of smart lamppost will be integrated into park environment and become part of park landscape. The sense of technology and future it creates will positively affect image of park.
Two
Increase level of informatization
Smart lamp poles are highly integrated, can effectively support a variety of applications, make full use of advantages of a multi-system and multi-functional pole, improve informatization level in park, reduce burden of personnel management and inspection. , reduce related operation and maintenance costs, improve management efficiency.
Three
Support feature extension
As an integral part of comprehensive perception platform in park, construction of intelligent street lights has important prospects and practicality. It also provides valuable examples and experience for smart construction of other parks and promotes development of smart products. in park industry. A large-scale application has great social significance.
The smart lamp post interface is also reserved to trigger other functions such as pile charging and environmental monitoring at a later stage, which reduces implementation time and investment costs for later projects, and avoids re-building information. infrastructure support environment.
4
Promoting adoption of new technologies
With increasing wireless frequency bands, density of base stations at 5G sites will further increase. Smart lampposts with "many points and wide areas" perfectly match distance between stations of 5G micro base stations, providing a good base. for future deployment of 5G network. The platform, convenient and secure power supply and transmission conditions make it possible to quickly implement micro base stations.
At same time, with continuous development of Internet of Things technology, various sensors and communication modules on smart lampposts are becoming more and more, and functions are constantly expanding. The technology of things is based on this, making people more “transparent” and things more “smart”.
How to implement
This intelligent lamppost system selects 720 meters of arterial roads in park and includes a total of30 lampposts and 83 independent functional modules. Each functional module can be integrated into original conventional lamppost or purchased directly. each module is built in two ways.
1. Self-Integration
Self-integration refers to independent procurement of functional modules from different manufacturers and their integration on bare lampposts. Each module is connected, installed and constructed independently. See information provided in section "Budget quotas for construction projects in City B" and use self-integration through calculations. The cost of constructing method is as follows:
Table 5 Estimation table for construction of "Self-integration" mode
Consequently, cost of implementing "self-integration" method is 111,000 yuan.
Second, complex procurement
Smart light pole manufacturers provide smart light poles with built-in necessary functional modules. They can be installed by directly purchasing intelligent lamp poles according to functions, and intelligent lamp poles have built-in wiring and junction boxes. The data of each functional module can be returned through a single transmission line. On request, cost of construction when implementing integrated procurement method is as follows:
Table 6. Estimated cost of building "Complex Procurement" model
Serial number
Name
Number
Unit
Total Unit Price (RMB)
Total cost (in RMB)
1
Lighting pole, grounding
30
root
3000
90 000
2
Lamp post wiring
1220
rice
2.7
3294
3
Debugging system
1
System
15,000
15,000
7
Total
108,294
Consequently, cost of implementing "self-integration" method is 108,000 yuan.
Third, method comparison
It can be seen from previous section that total cost of one lamppost in two ways "self-integration" and "bundled purchase" is 111,000 yuan and 108,000 yuan respectively, which are close to each other. . However, in addition to investment costs of project, feasibility and viability of construction method should also be assessed, focusing on following aspects:
Bidding
The "bundled purchasing" method does not dismantle whole system and still maintains a certain scale, so bargaining power is relatively high and there is still room for exploration. System integration will undoubtedly become a powerful bargaining chip.
Integration
The "integrated procurement" method is a unified design, production and installation for high-integration intelligent lamp pole manufacturers, and there will be no problem that some functional modules do not match lamp pole interfaces, and background control platform is not compatible with modules.
The "self-integration" method requires purchasing each module and sending it to lamppost manufacturer. It may happen that reserved equipment space does not match actual equipment, installation cannot be installed, or lamp pole manufacturer needs to redesign interface and fasteners, which increases potential costs and even makes integration impossible.
Installation effect
Lighting poles of "complex procurement" are integrated by themselvesmanufacturers, colors and shapes of various modules are unified, they are more in harmony with shape of lampposts, without feeling harsh.
The "Self-integrating" lamppost belongs to Wanguo Equipment. The color and appearance of each module is difficult to unify, and even shapes are different, which may not be consistent with shape of lamppost and affect appearance.
Last maintenance
The "bundled purchasing" method ensures maintenance and quality control of smart lamp pole as a whole, and when a problem occurs, directly contact lamp pole manufacturer to achieve a "one-stop" solution to problem.
"Self-Integration" includes products from many manufacturers, and there may be interference and incompatibility between modules, which increases many potential risks. After problem occurs, because division of labor interface is not clear, and responsibility is not clear. , maybe "problem not found" "embarrassing situation "no one to manage".
Organization and coordination
"Complex Procurement" only connects to one manufacturer, plan implementation process is easy to communicate, and organization and coordination requirements are not high, so management efficiency is high. In "self-integration" method, communication and coordination will become a major problem. Due to large number of manufacturers, workload of requests, orders, deliveries and other communications of each manufacturer will increase exponentially, and problems may also occur after problems. A situation of gossip and shifting responsibility.
Conclusion
Based on a section of road in Park W in City B, this article presents a design diagram of 30 smart lamp poles with 84 modules to realize six functions of smart lighting, WIFI network, information dissemination, public broadcasting, video surveillance, and emergency assistance , which contain information about distance between plans and number of deployments of each smart pole module in park.
This article takes a smart light pole in Park W as an example, analyzes economic and social benefits that a smart light pole system brings to a park, and discusses two types of "self-integration" and "integrated integration." when deploying smart lamp poles. In case of a similar investment, implementation method of "bulk procurement" is preferred.
