Direct-current centralized lighting system and method for measuring lamp state of direct-current centralized lighting system

Abstract

The invention discloses a direct-current centralized lighting system and a method for measuring the lamp state of the direct-current centralized lighting system. The direct-current centralized lighting system comprises a direct-current distribution box and a plurality of lamp units; the direct-current distribution box converts a command protocol controlling the lamp state into a voltage signal with amplitude change to be output through a power line; each lamp unit comprises a lamp, a power conversion unit and an artificial load unit, wherein the power conversion unit is coupled to the lamp andthe artificial load unit, and coupled to the direct-current distribution box through a power line; the power conversion units receive a voltage signal, and judge whether the voltage signal is matchedwith a preset treaty rule or not; if the voltage signal is matched with the preset treaty rule, the power conversion units collect state information of the lamps; the power conversion units control the artificial load units to act, and a current signal corresponding to the state information of the lamps is obtained and transmitted back to the direct-current distribution box through a power line;and the direct-current distribution box analyzes the current signal to obtain the state information of the lamps.

Description

technical field [0001] The invention relates to a direct current centralized lighting system, in particular to a direct current centralized lighting system capable of measuring the state of a lamp and a method for measuring the state of the lamp. Background technique [0002] In the DC centralized lighting system, it is very important for the DC distribution box to perform remote state detection of the lamps, such as the switch status of the lamps, the state of energy consumption and the detection of the working temperature state, etc., so as to know whether the lamps are faulty or working normally. [0003] During the use of the existing DC centralized lighting system, it is inevitable that there will be faulty lamps. At present, the location and judgment of faulty lamps are mostly determined manually. This method is often only dealt with when the lamps are damaged. In time, it brings a lot of inconvenience to the later maintenance of the project, and also causes troubles t...

AI Technical Summary

Problems solved by technology

However, these two methods have certain defects. On the one hand, additional communication modules need to be added, the network is complex, easily disturbed, and the failure rate is also high; on the other hand, the cost of status detection is also high. Not suitable for some low-cost applications

[0005] In addition, the patent CN103763833B discloses a control method and system for controlling LED street lamps based on power supply lines. By adopting a DC power supply communication method, remote dimming and status detection of street lamps can be realized. However, this method can only control the lamp unit For overall control, unable to detect the status of individual lamps

Patent CN105101593B discloses a street lamp fault detection system and method, which uses the method of detecting

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