China has a vast construction market. The total area of houses in the country has exceeded 40 billion square meters. At present, more than 95% of the newly built buildings in China each year are high-energy-consuming buildings; while only 4% of the existing buildings have adopted energy efficiency measures. China has become the second largest energy consumer. The huge building energy consumption has become a huge burden on the national economy, so it is imperative for the construction industry to comprehensively save energy.

The energy consumption of public buildings in China accounts for about 70% of the total energy consumption of public institutions, of which the energy consumption of central air conditioning accounts for about 50% of the energy consumption of public buildings, and the energy consumption of lighting accounts for 25% to 35% of the energy consumption of the entire building.

In addition, it also includes the energy consumption of elevators, water pumps, compressors, office equipment, etc. The energy consumption of various electromechanical equipment has a large energy-saving space. At present, most buildings are manually managed, with extensive management of equipment in buildings such as elevators, air conditioners, and lighting fixtures. Real-time data on water, electricity, heating, gas and other related energy consumption in buildings cannot be clearly grasped and analyzed. This causes a huge waste of energy. In response, Sanleng launched a building energy-saving IoT solution. The program can provide comprehensive energy-saving products and engineering services for shopping malls, office buildings, schools, hospitals, hotels, airports and other large public buildings.

Building energy-saving IoT solutions

The Sanleng building energy-saving IoT solution is based on wireless communication technologies such as LoRa/NB, and is equipped with corresponding sensing devices through smart gateways, wireless connections and control devices, such as temperature and humidity sensors, current, voltage sensors, illuminance sensors, switch/analog acquisition equipment, etc., transparently transmits the collected energy consumption data to the server and cloud platform, realizes precise control, fine management, high efficiency and energy saving of energy consumption of the entire building.

Building energy-saving Internet of Things system composition

The building energy-saving Internet of Things system is mainly composed of four parts: perception layer, transmission layer, application layer, and terminal layer.

◎ Sensing layer, including data acquisition module, current, voltage sensor, temperature and humidity sensor, street light controller, electric meter, water meter, gas meter, etc.;

◎ Transmission layer, including NB+4G or LoRa+4G gateway equipment, LoRa/NB wireless connection equipment, wireless transmission network, etc.;

◎ The application layer, mainly the building energy consumption monitoring and management platform, is responsible for monitoring, managing and analyzing the real-time data of the entire Internet of Things system acquired by the perception layer;

◎ The terminal layer refers to smart phones, ipads, computers, PCs, etc., which can obtain real-time operation data and fault alarm information of the equipment in the system in time.

Product advantages

◇ Data transparency

The installation of sensing equipment with integrated sensing, communication, calculation, self-inspection and other functions at the main energy consumption points of water, electricity, gas and other buildings can realize the accurate collection and transmission of energy consumption data and realize the full transparency of energy consumption data. Configure temperature, humidity, and light sensors at the main nodes of the building to automatically sense indoor heating and cooling to provide humanized services for the building.

◇ Energy consumption analysis

Install management software for the building management department, summarize and analyze the data collected by the sensing equipment, explore various energy consumption patterns such as electricity, water supply, and air conditioning, and discover factors such as normal use and wasted time, space, and behavior of energy.

◇ Energy saving control

Based on data analysis, an energy consumption monitoring and warning strategy can be established, which can alert in time when energy consumption is abnormal, and remotely shut down related equipment in critical or empty energy consumption states through a PC or mobile phone to reduce waste. At the same time, it can realize equipment management functions such as equipment status monitoring, fault diagnosis, and critical alarms.

◇ Simple construction and low cost

The hardware facilities are all wireless transmission of the Internet of Things, without wiring, construction can be carried out under the normal operation of the energy supply facilities, which reduces the difficulty of construction and the impact on normal operations.