Design and implementation of intelligent lighting

2022-07-24
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Design and implementation of intelligent control system for parking lot lighting

Abstract: This paper presents an intelligent control system for lighting based on CAN bus technology. The system can effectively solve the problems of energy consumption and material consumption faced by the underground parking lot of high-rise residential buildings. Compared with similar foreign products, it has a higher cost performance ratio

key words: design and implementation of intelligent control system for parking lot lighting at present, most of the high-rise residential buildings under construction and already built have underground parking lots. These parking lots generally have multiple personnel entrances and exits and multiple vehicle entrances. Due to the large area of these parking lots and the increasingly obvious trend of "replacing wood with plastic" and "replacing steel with plastic" in the downstream industry, a large number of lighting equipment are required for long-term lighting. If the normal control method is used, the line is long and the circuit is complex. Because there is not a simple one-to-one correspondence between the exit population and the driving route, it is difficult to use a simple strong current control method to realize the automatic control of the internal lighting of the parking lot. Usually, the continuous lighting method can only be used. In some places, although infrared or voice control switches are used to control lighting, automatic control can only be realized for a small area (such as the entrance and exit of stairs), but not for all parking lot lighting. This will not only cause a huge waste of energy and equipment, but also cause a great economic burden to the property management of the community

almost all high-rise residential buildings have such problems. Similar intelligent lighting control systems have been developed abroad to solve the above problems, but the price of products is very high; There is no such product in the domestic market. The intelligent lighting control system designed in this paper can fill this gap. 1 system introduction 1.1 the function realized by the system can be downloaded to each node of the system according to the specific conditions of the local parking lot and the lighting control scheme suitable for the user. When people or vehicles enter the parking lot, the lighting intelligent control system can control the designated lighting equipment in the parking lot according to the lighting control scheme, so as to realize the intelligent control of lighting. 1.2 system composition the system is composed of upper computer, outgoing population control node and basic node, and each part is connected through CAN bus

can bus is a kind of bus launched by Bosch Company for modern automobile application. Many can varieties have completed the test, trial, optimization and batch utilization in a short time. The data communication of the full process bus has outstanding reliability, real-time and flexibility. The CAN bus works in multi master mode. Any node of the network can actively send information to other nodes on the network at any time, regardless of master and slave. The communication mode is flexible and does not need node information such as station address. Based on the above characteristics, the system selects can bus as the data transmission bus of the system

after the upper computer downloads the control schemes of all nodes in the system to the corresponding nodes, each node will complete the interaction with the relevant nodes according to the interconnection relationship table between the nodes downloaded from the upper computer

the basic node is connected to a certain number of sensor circuits and lighting circuits. When the sensor detects that there are people or vehicles passing nearby, the sensor sends a signal to the basic node connected to it; After receiving the signal from this sensor, the basic node searches the interconnection relationship between the sensor and the lighting lamp of this node downloaded from the upper computer to determine whether there is a lamp associated with this node. If there is, the lamp will be turned on and kept illuminated for a period of time. At the same time, the basic node also sends the sensor message to other basic nodes through the CAN bus; When other basic nodes receive this message, they also judge whether this node has a lamp associated with this sensor according to the interconnection relationship table. If so, turn on the corresponding lamp and keep it illuminated for a period of time. In this way, all nodes will open the expected lighting circuit according to the scheme formulated by the user, so as to realize the intelligence of lighting control

the exit population control node (hereinafter referred to as the control node) is longer than the exit population of the parking lot. The control node monitors various messages on the CAN bus at any time. When the status of a lighting circuit changes, the control node reflects the status change of its circuit to the status indicator according to the corresponding relationship between the status indicator downloaded from the upper computer and the lighting circuit. 1.3 working principle of the system (1) the basic node stores the interconnection relationship between the lighting equipment controlled by the node and the sensors of other nodes. When a basic node receives the sensor information sent by other basic nodes, the basic node searches for the local interconnection relationship and opens the security door. How is the soft impact detected? Lighting equipment related to this sensor

(2) when the basic node receives the upload command sent by the upper computer, the basic node uploads the local control scheme to the upper computer; When the basic node receives the download command sent by the upper computer, the basic node downloads the related control scheme to the local

(3) the basic node uses the sensors connected to it to monitor the passing of vehicles and personnel. When vehicles and personnel pass through, the basic node will send relevant sensor information to other nodes in the system through the CAN bus

(4) the master control node stores the corresponding relationship between the status indicator and each lighting circuit in the system. When a switch of the master node is pressed, the master node sends a command to the basic node connected to the corresponding lighting circuit to turn on all lighting devices of the specified circuit

(5) when the master node receives the upload command sent by the upper computer, the master node uploads the local interconnection scheme to the upper computer; When the master node receives the download command sent by the upper computer, the basic node downloads the related interconnection scheme to the local

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